Okay, I have talked with you at length about your setup and I know personally you are doing everything the right way.

Stop worrying!!! You are over thinking all of this. Just leave the snake be for one week. Then try feeding him. Try f/t if you want but if he doesn't eat, would get a live mouse for the following week. He will not die, he will not starve. Don't worry about the humidity, don't worry about the temps. Just check on him once a day or so to make sure he is alive (without touching him or moving him or his hides).

A stressed snake will often "lay out" in between objects in the cage. This is just a normal new ball python behavior. Sometime in the next week he will discover that his hides and his home are safe, and he will use his hides.

Quit worrying and relax!! He isn't an infant, he doesn't need to be watched over 24/7. He will be just fine