One thing I like to do is just leave them all on, but minimize my contact with Google's services. Then I check in every few months just to confirm they haven't collected anything on me.
Off topic - I am actually working on a framework to automate the process of self-hosting these services on some VPS. I might open-source it once it is in usable shape. But some things just have no real alternative(like maps and android)
Apple Maps is actually acceptable I think (at least on iOS). I'm trying to find an alternative for Google Photos.