Interesting project! I've found self hosting a lot more approachable with the advent of AI to help with inevitable errors. I run every new app in its own service account and as a rootless podman quadlet. There are three main difficulties that I come up against with every app. First is backups, or more accurately restoring data. My understanding is that just taking a snapshot doesn't always give you a working restore point because an app could be mid-database migration or something like that. Second is updates, and third is accessibility outside the network. I am slowly working on my own solutions, interested to know how you tackle those though?