Ohh, I had no idea those come with easy installs of the *arr stack. Too bad about jellyfin being locked to higher tiers but manual streaming doesn't seem that complicated either.
I have a vpn through a proton mail plan but it was giving some p2p errors last time I tried it, maybe setting that up properly would be a better first step if it's possible.
Thanks for a detailed answer!
edit: Ahh, proton vpn p2p support is locked behind a higher tier, but at ~$7 per month for a seedbox upgrading the proton package might be a better deal in the end