Sounds like you’re doing fine to me. The stakes are indeed higher, but that is because what you’re doing is important.

As the Bene Gesserit teaches: I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear.

Make your best effort at security and backups, use your fears to inform a sober assessment of the risks and pitfalls, and ask for help when you need to, but don’t let it stop you from accomplishing what you want to. The self-hosting must flow.