What’s your source for the shows and what do you use get them?
I get an RSS feed from ShowRSS and feed that into Deluge and a plugin called YaRSS2. You can use regex filtering to include/exclude entries from the feed like 720 or 1080 etc. After download you can move them to another folder you created.
I’m on windows so Deluge hasn’t been updated in ages, I recently set up my RPi1B as a Pi-Hole DNS on my network and might run Deluge off that and hook up a network drive, the original B is kinda old now so not sure how itll handle that much load, but we’ll see.