My suggestion is either to use one device, that has a decent enough GPU for transcoding, to do everything or a separate NAS drive purely for storage and a separate PC with that GPU capability for jellyfin/plex + Immich. Home assistant and arr aren’t that resource hungry. Also go for Usenet instead of torrents. Good luck and happy sailing.

Yeah I'm still debating over Usenet vs. Torrents, but Torrents seem better for some old stuff. And I am a bit off put by the mention that there are some Usenet groups that are kinda secretive and special and hard to get access to. I mean there is kinda the same with private trackers but at least they seem a bit more transparent about it.