He should be able to diagnose (although mine does everything in concert with my psychiatrist).

I don't know if your GP would feel comfortable doing your meds. You are on a lot of them and that may be more than the GP feels able to handle. But it depends on the GP. I will say that I'm on fewer meds than you and I trust my GP greatly and he's handled psych meds for me before when my pdoc was out for surgery and I still wouldn't want him to mess with my APs or the overall balance of meds I'm on right now while I'm on a ton and things are shaky; it's just not his specialty and I think he'd be the first to say that. But your GP may be different.