Always Get Help From VMware Support, You can contact VMware via local numbers. According to the description of your setup the following product should be ok for you.
VMware vSphere Essentials Plus for Smaller Environments
Feature: vSAN = Yes
vSphere High Availability (HA): Yes
vSphere Data Protection: Yes
Licenses: For 3 physical servers (max. 2 processors per server)
Cores per CPU: No limits
VMware vSphere Essentials Plus Kit COST: $
VMware VDI Administrator.
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We are using Software Defined Storage for the HCI • StarWind Virtual SAN ® Free for exactly same purposes that you've described. Didn't have any issues since implementation but plan to upgrade to commercial version (which isn't expensive at all) just because we need 24/7 support according to our internal SLAs.