Everybody seems to favour Trash Guides. Just as a counterpoint:

He is super focused on the highest quality available. Unless you’re watching on a huge 4k/UHD screen with professional a sound system, take those guides with a grain of salt. Modify the values to your own screen resolution. If your screen is an older model it may not accommodate more than 1080p or even 720p video anyway.

Bandwidth may also be an issue depending on where you live and what your ISP provides. If so, downloading larger files than your screen/projector affords is a double waste. Go for h265 instead of h264 and save yourself the wait. You can always download them in a better quality when you upgrade your home theatre.

I want to make clear, I would have been lost in the *arr settings if not for the Trash Guides, but man. They’re absolutely written for somebody with ample bandwidth and a huge home cinema setup.

Jackett and prowlarr are redundant, other than that you’re pretty much set.

As for setting these up, in my case I winged it and went through the config pages, setting up what I thought was necessary, and it went mostly fine. If you have no idea what you’re doing with these good resources are https://wiki.servarr.com/ and https://trash-guides.info/

Other comments seem not to mention the Real Debrid bit, so I’ll focus on that here:

Personally, I use my preferred debrid service to reduce the amount of stuff I need to store. You can mount the files you’ve got saved in your debrid using rclone with the webDAV creds that Real Debrid gives you.

You should probably use rogerfar’s rdt-client, even if you only use real Debrid to download torrents without using your own ip. It implements the qBittorrent API so you can point *arts at it as a download client. It’s got a couple of modes, so you can either have the files downloaded or symlinked from the mount discussed above.

Zerg from DebridMediaManager is something I’ve heard good things about, but i haven’t been able to try it as its source-available for a fee, which i disagree with.