If you DON'T wait, he'll be scared. BPs are extremely shy pythons. The more you let him settle in, the less stressed out he'll be. Make sure he's got nice dark tight hiding spots.. at least one on the cool side and one on the warm side.

After that week, let him tell you how much he can handle, and I'd keep initial handling sessions around 15 minutes or less. You want him to keep eating for you!