Neither of your proposed solutions are really similar to Immich, the first is certainly private and secure, but you don't get many of the conviniences like location-based search, automatic face/object tagging, automatic OCR, etc.

Your second solution is much closer to Immich in terms of feature set, but (AFAIK) costs a bit more than 1$/month, depending on how much data you have. And it also doesn't match the privacy you'd get with Immich. Google will happily run your private photos through whatever AI model they feel like, without your permission or consent.

I'm not saying your solutions aren't good, if it works for you then great! But they're not really something you can compare to having an Immich instance