Additional stuff you may be interested in:
Caddy for reverse proxy (accessing your services with a nice URL instead of IP address and port numbers)
PiHole for DNS-level ad-blocking and other useful router functionality
Look for a backup solutions for your config files, maybe you can handle this at Proxmox level but I don’t have experience with that.



Be careful before uploading your config files to a public location like GitHub, you don’t want to inadvertently publish some secrets like passwords, API keys and such. A copy to an external drive should do the trick just fine as a starting point.