If you want some nice hides for cheap, I'd just out an opening in a plastic flower pot. =] Cheap and effective.
If your Eclipse is on the cool side, it's no big deal. Snakes will thermoregulate. It's normal.
Yeah, it's normal for them to jerk and flinch away from motion near their head. Some ball pythons don't like their heads or necks touched and plus, being new, he's nervous and under some stress.
How often are you handling him? If you only got him on Tuesday, I'd leave him alone until at least a week has passed and then try getting him to eat. Handling so soon can stress out a snake very much.