<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f1a5b-622a-7ba1-b138-7e2936c064a4,g:bd53e5d3-a2f2-4e64-98d0-b13fbcd09177-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.sunflowerbank.com/role/Cover" xlink:type="simple" xlink:href="fcb-20260701.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.sunflowerbank.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019f1a5b-622a-717b-9a17-82c27a0e08c1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_DocumentType_019f1a5b-622a-717b-9a17-82c27a0e08c1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019f1a5b-622a-7c0d-8b6f-c4fd5707e7b6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_DocumentPeriodEndDate_019f1a5b-622a-7c0d-8b6f-c4fd5707e7b6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019f1a5b-622a-78ff-a316-c43197697abb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityRegistrantName_019f1a5b-622a-78ff-a316-c43197697abb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019f1a5b-622a-7204-967a-2b3f5b96bcd9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019f1a5b-622a-7204-967a-2b3f5b96bcd9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019f1a5b-622a-7fcc-8370-cc4f84467fc9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityFileNumber_019f1a5b-622a-7fcc-8370-cc4f84467fc9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019f1a5b-622a-78c2-8ff9-ee9f7f11d91c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityTaxIdentificationNumber_019f1a5b-622a-78c2-8ff9-ee9f7f11d91c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019f1a5b-622a-7c02-88c0-ac8a6f1b2060" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityAddressAddressLine1_019f1a5b-622a-7c02-88c0-ac8a6f1b2060" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019f1a5b-622a-7dbb-9758-79e96825dda2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityAddressAddressLine2_019f1a5b-622a-7dbb-9758-79e96825dda2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019f1a5b-622a-7ca4-b9cb-d7db187e5163" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityAddressCityOrTown_019f1a5b-622a-7ca4-b9cb-d7db187e5163" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019f1a5b-622a-7022-b39b-26826ee571df" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityAddressStateOrProvince_019f1a5b-622a-7022-b39b-26826ee571df" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019f1a5b-622a-72dc-8bf9-f008bcd2339a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityAddressPostalZipCode_019f1a5b-622a-72dc-8bf9-f008bcd2339a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019f1a5b-622a-7f9e-adc8-78c5d949eb7a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_CityAreaCode_019f1a5b-622a-7f9e-adc8-78c5d949eb7a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019f1a5b-622a-780b-82df-4e9fb54923fd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_LocalPhoneNumber_019f1a5b-622a-780b-82df-4e9fb54923fd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019f1a5b-622a-7ca1-9b8c-b2b8121e7a89" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_WrittenCommunications_019f1a5b-622a-7ca1-9b8c-b2b8121e7a89" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019f1a5b-622a-7873-92f1-17dbd06585e1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_SolicitingMaterial_019f1a5b-622a-7873-92f1-17dbd06585e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019f1a5b-622a-76f7-bb00-9eb4cfd3959c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_PreCommencementTenderOffer_019f1a5b-622a-76f7-bb00-9eb4cfd3959c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019f1a5b-622a-77ca-b148-39b466a7d3d2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019f1a5b-622a-77ca-b148-39b466a7d3d2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019f1a5b-622a-7584-900e-d6cb4eebb9a2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityEmergingGrowthCompany_019f1a5b-622a-7584-900e-d6cb4eebb9a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_019f1a5b-622a-7e6a-b5eb-d00df2c42d6d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityExTransitionPeriod"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityExTransitionPeriod_019f1a5b-622a-7e6a-b5eb-d00df2c42d6d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019f1a5b-622a-7560-a24a-454faf517351" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_EntityCentralIndexKey_019f1a5b-622a-7560-a24a-454faf517351" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019f1a5b-622a-70ca-848e-f90d291f328e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_AmendmentFlag_019f1a5b-622a-70ca-848e-f90d291f328e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019f1a5b-622a-708e-be60-423975980668" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_TradingSymbol_019f1a5b-622a-708e-be60-423975980668" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019f1a5b-622a-769f-a84e-307ff412d424" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_SecurityExchangeName_019f1a5b-622a-769f-a84e-307ff412d424" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019f1a5b-622a-7675-86c0-178bcebbcbb5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019f1a5b-622a-72bc-b0e1-98f20e843446" xlink:to="loc_dei_Security12bTitle_019f1a5b-622a-7675-86c0-178bcebbcbb5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
