Good advice so far! I try to keep them 89-91 hot side, your humidity is fine unless he's about to shed. At that point you should move your water dish on top of your undertank belly heat to raise the humidity more. I would try to avoid being hands on with the snake until it is settled and eating. Stressed animals need time to adjust. You want to make sure you give him time to settle in and then try feeding small live mice. Young snakes and new acquisitions should usually be fed live until they are eating regularly. At that point you can try to switch to F/T.
Regards,
B