What I see as flawed is keeping a snake that lives in a warm climate at a temperature it is only exposed to for a few hours at night while hunting and most of the time it doesn't even drop down that low.. A ball python probably spends 75% of its time in a termite mound which is at a steady temperature since it probably still stays warm underground at night. I think an acceptable range for most novice keepers is a 78-83 ambient or cool side and a 87-91 hot spot. I don't see anything wrong I guess from what your doing since you have no problems but don't accuse folks of doing it all wrong if it is not done in your way.