Congrats on your new purchase! You could not have picked a better person to deal with!! Jason has many fine bullsnakes for sale each year, and I am sure you will be exceptionally pleased!!
IMO, yes, pits do better at slightly cooler temps. If you are using a hot side, like you mentioned, at that temp, but the snake also has a cooler side to choose, I think that should be fine. I use ambient temps, but your temps sound fine, and I hope others can chime in on their experiences as well.
Post pics of your bull when you can!
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Genesis 1:1
