Awesome to see, good luck to you!
If you're looking for tips, I'd try to set up Prowlarr first if you intend to use it, it'll save some reconfiguration down the line.
Though I don't find anything as complex as mounting and permissions in the *arrs, haha.
But my favorite part about tinkering with home servers is just learning a little at a time, expanding naturally. It's easy to find guides that are the "ultimate, best server configs", but unless you understand what benefits they're offering, you can't really determine what fits best for YOUR needs.
I started with CouchPotato on Windows years ago and now have *arrs running through docker on headless boxes and keep adding on fun services.