I’ve also recently gone this way. I used my old gaming PC motherboard, ram, and CPU. Put Ubuntu server on it and it’s been running great. Mine is running in software raid5 and has room for 7 drives (though I’m only using 3 at the moment). I did put a gtx1650 in it for Plex transcoding and that works great as well.
I think Strange New Worlds season 1 is a strong contender for best Star Trek season. Though it has the advantage that it is a shorter season than most.