Be aware that HPE ProLiant MicroServer Gen10s don't have iLO / BMC / IPMI.
And they use AMD CPUs which tend to be less supported than Intel. Last, there
was some discussion at least a year ago on some minor problems that now either
have a work around, or it's been fixed in FreeBSD / FreeNAS.
Of course, if you weren't planning on the MicroServer, then those don't apply...