I guess it’s nice to search lots of things at once?

I've been using self-hosted Seafile for quite a while and can recommend it.

Oh right haha in that case I think I'll just wait until there are idiot proof instructions!

I've been using Seafile for years and like it a lot. Simple, fast, easy to set up, apps for everything, well maintained. I keep regular device backups so am not worried about a bug wiping out the server.

I haven't tried any integrations, any recommendations?

I don't think so (and I say this as a vegetarian), because as you move up the intelligence scale your ethical obligations become more defined. For example, animals practice infanticide, murder, rape, etc etc, and we can't really expect them not to, or judge them for it. We, on the other hand, should hold ourselves to higher standards. So should the superintelligent alien race.