Welcome! Even though this community can be feisty at times, it's definitely friendlier than Reddit.
Regards the temps, 75 is ok but I always recommend for keepers to bump their ambient temps to at least 78. Ideal temps would be around 80-84, especially if you're not providing a constant hot spot. The reason for higher temps is warmer temperatures reduce the time required for digestion and increase overall metabolism. With the warmer temperatures your BP's body functions more efficiently.
I attached a source below for you to check out. If you scroll down, you'll find additional info regarding temps and different kind of pythons. This specific citation is for Rock Pythons but I feel that it applies to other species of pythons as well:
https://www.researchgate.net/publication/11024579_Effects_of_temperature_on_the_metabolic_response_to_feeding_in_Python_m olurus
The humidity isn't as important as temps unless your BP is going into shed so I wouldn't be too worries about the CHE sucking out the humidity. Once shed is coming up, you can always bump up the humidity with moss or by spraying.