Hello. I'm a brand new ball python owner too! Just got my little guy this last Sunday. The temperature in my vivarium has also been my biggest concern. I just got higher wattage bulbs today, and even though they definitely produce more heat I think my tank may be too small for so much because it went up to like 94F on my hot side. There is so many contradicting opinions on the subject, but like you I seemed to find some good advice from this group. One thing I will say concerning thermostats is to opt for the electronic one with a probe. It's more accurate than the little dinky ones. Good luck with your new addition!