Plex Media Server No.
Jellyfin. Easier to configure. No corporate BS.
The rest is fine.
Use Radarr, Sonarr, Lidarr for movies, TV, and music respectively. (they really missed the ball with the Sonarr name).
I recommend getting an account with a service like UseNet News (UNS). Set up NZBGeek. Connect the above to that. UNS costs a fraction of what streamers cost and you can download most anything you want any time.
I would suggest torrenting, but I feel that's inherently more risky.
X gonna give it to ya. (Same here, just being silly.)