Building a personal Seedbox

Hey everyone!

Got a Little micro PC to move my torrenting off my Plex server and onto its own personal torrent server.

I'm going to just run the torrent software on this machine alone with ftp to transfer from this box to my Plex server.

My question is, What operating system would you all recommend along with ftp and torrent client. Just looking for suggestions and options,

Right now it's running windows 11 with PIA as the vpn, Qbittorent and FileZilla. here's the specs,

Intel core I3 9th generation, 4Gigs of ram, 4TB HDD. very basic but great for file transfers has a 1Gig NIC in it.

I think I'm going to slowly convert all my servers and NAS into actual server racks and proper builds but this works for now :P