Had a go at it with 1/2 batch of dough, cheese is fortina, shrooms are sh-i-itake and oyster roasted in the oven the night before with some EVOO, thyme, and ground black pepper. Lesson learned next time lightly oil the bowl I let the dough rest in.
Baked at a mere 550 (as hot as my oven goes) for 6 minutes, looked, 1 minute more, looked 1 minute more. Would take a shot at 7 minutes next time. It looks like a state or nation somewhere, not sure which one :-).
I always dread the "first time" but this one was not so bad :-)