From what I have seen Jeff may not be the best communicator, but he knows his stuff. Without a temp gun to look at the temp, your hands are pretty unreliable to be honest. Boas have different requirements temp wise than Balls. My boa spent at least 75% of her time on the room temp side of her cage which was 70-75 degrees. Her hot spot was 86-88.
I would email or call (your best bet) to ask his reasoning, I am sure he will tell you. I would not run to the BOI for a perfectly healthy and happy arrival. Also it does say on his shipping page that he will answer and resolve any questions you have.
Just my opinion.