After a good experience running FreeBSD on LXD, I decided to install it directly on the server. As I discovered earlier, it seemed to be a good idea to update the storage adapter to support IT mode.
I found a great set of instructions and updated the H310 card to LSI IT firmware. Essentially, it was just following a recipe. It took about an hour or so with much of that time spent creating the bootable vFlash partitions(pdf) and rebooting the server a few times.
After updating the storage adapter, I installed FreeBSD 14.1 on the server. I followed the defaults and it booted up without any problems. Good stuff.