Retention for 90%+ of providers is at least 4500 days for binary files and 110000 days for newsgroups. Have two providers, one monthly and one block, that run on different backbones with one that takes down for dmca and one that doesn’t and you’ll be fine. There are very very very few shows or movies that you can’t get. Don’t have to worry about VPN, ratios, trackers or any of that other crap.