Hey OP. I’m a bit late to the party, but I figure I’ll throw in my two cents.
Generally speaking, you’re going to want a VPN (I suggest Mullvad), a torrent client (I suggest qBitTorrent), a NAS (for storing data), a movie server (Jellyfin is great), and something that can connect to your streaming server.
I suggest Mullvad as a VPN because 1. it’s a no log service, 2. you can pay for your subscription using Monero (a type of private/anonymous crypto), and 3. it has a “Lockdown mode” which will block any traffic from your PC that isn’t routed through your VPN preventing IP leaks.
I suggest qBitTorrent as a torrent client because it has an advanced setting that allows you to specify which network interface is used for torrenting. You’ll want to set that to the virtual network that Mullvad creates so that even if for some reason your VPN goes down, your torrent client won’t leak your IP.
For actually hosting movies you’ll want to store them somewhere. Network attached storage is good for this. I built my own using a raspberry pi, and it’s separate from my torrenting PC, but there’s no reason you couldn’t also configure your torrenting PC to also be a NAS. If you don’t want to think too hard about a NAS, there are companies like Asustor make premade network storage.
For actually hosting movies you’ll want something like Jellyfin running on a computer that has access to where your movies are stored. Again, Jellyfin can run on the same computer that’s running your NAS, and your Torrent client. It can all be the same computer. This step may require some configuration on your part. You may want to give your Jellyfin server a static IP so that your devices will automatically reconnect if your router resets.
Finally, you’ll want to actually watch your movies. I have Roku boxes in my house, so my setup for this was downloading the Jellyfin app, and then typing in the local IP address of my Jellyfin server. You don’t necessarily need an external box for this, Android TVs can install the Jellyfin app.
And that’s a kind of high level example setup. There’s other things that you can do that’ll make your setup more secure like properly configuring wireguard in mullvad to obfuscate your traffic so that your ISP won’t know that you’re torrenting through a VPN, or encrypting your NAS data, but that’s something you should decide if it’s worth doing.
A VPN is a great start, but there’s a few things you can do to make yourself a bit safer.
I like Mullvad for it’s client that allows me be in a lockdown mode where access to the internet can only go through a VPN. It’s a killswitch and you’re going to want one no matter who provides your VPN. The reason you want a kill switch is because your computer may otherwise connect to your home or office network and leak your IP address.
If you torrent you’ll want a torrent client like qBitTorrent because under advanced settings in that program you can set it to only work on your VPN’s network interface. This adds a second wall of protection to make sure you don’t leak your IP address.
At this point your ISP isn’t going to know any much more than you’re using a VPN and torrenting, but that’s all. And you’re probably good right here, but there’s more you can do if you’re really worried.
By tweaking some wireguard settings in the Mullvad client you can even obscure your torrenting traffic altogether. At that point your ISP won’t have much more to report than that you’re using a VPN.
You’ll then want to test your VPN is working well with your torrent client by using Torrent Tracker IP Checker or something similar. Verify that your IP is what it should be.
And if you’re feeling extra motivated, doing all of this on a separate computer running linux would be ideal so that you can ensure no software running on your rig deanonymizes you, and can keep it locked when not in use.