if you want freebsd and decent i/o you'll be better with an x86 mini pc
you can get dell/hp celeron class cheaper than arm boards and that includes power supply, case and some some direct attach storage
probably draws 2x the power of an arm box
bought one of these (refurbished) https://support.hp.com/ee-en/document/c04017240 the dual core version 4GB RAM / 16G SSD got it cheaper than an arm board ($50) and it is well supported memory and ssd seem to be upgradable cpu performance is about the same as an arm64 board but IO is much better...
forums.freebsd.org