My friend got a BP that was really nippy when he got her. She struck at me twice on the ride home. I am happy to say that she is a very tame adult. The advice I gave my friend was to setup an enclosure in a quite place with good temps and humidity. Wait 4 or 5 days without interruption and then feed. Put her on a 5 day schedule. Don't bother her the day of feeding or the day after. The other 3 days of the schedule take her out regardless of whether either of you want to. You keep snakes, you might get bit. Buckle down and take her out every day for at least a few minutes and she will get acclimated and mellow out or one of you will die trying. Now obviously you know how to keep your snake. With 40 you know more than I. I would say just buckle down and get some one on one time every day you can till the snake settles down. As long as the snake is eating I wouldn't worry about a little hissing or a strike or two.