I would leave him be for the first week to let him settle into his new environment before trying to handle him at all, mostly to reduce stress. I find that in general most ball pythons have a default setting of non aggression. I've come across a few ones that would strike at anything that moved, and they can be head shy, but for the most part they don't mind being handled even if they are rarely taken out of their cages. At one point I had 23 ball pythons and I would only handle them when cleaning their tubs, I never once got bit or had them shy away from me. I could reach right in and pick them up without fear. They did not require much interaction to remain tame, they simply were tame.
Good luck with your new addition!!