I would recommend prowlarr instead of jackett for indexer management, and pihole as at least an additional blocking service but in reality it’s really all you need for use at home. I’d also strongly encourage use of a VPN on your *arr download services. I use a separate box to run Plex and then have my *arrs all running on their own VM inside if it to provide separation and allow be to more easily segregate the network traffic (as someone that doesn’t really know docker that well it “just works” for me. Also probably worth looking at how to store your media on an external target, it’s easy to quickly accumulate 10s of TBs of media and trying to store that all on the server locally is asking for trouble. Better to set everything up on a NAS to start.
Just to put this out there, a Nabu Casa sub directly supports the development of HA. For me the remote connectivity is just a bonus (that I honestly don’t need since I could easily put it through a cloudflared tunnel or set it up through NGINX proxy manager.
Not that this isn’t cool, having more ways to use HA is always great. Personally I expose my garage doors as Apple Home devices through HA and so get buttons on CarPlay that generally work well (as long as I have any signal which isn’t always the case in the driveway).