Congrats on the new BP and the successful feed. I think it is great that you are willing to let him settle in a bit more before handling. That should make the transition very smooth and cut waaay down on stress.

I'm a new BP owner myself. I've had Sobe for 4 months. When I handle Sobe I try to move deliberately but slow and steady. No sudden movements. It will get better as he gets used to being handled more.

Oh yeah, forgot to add that I think the hissing is just his way of telling you that he doesn't want to be bothered.