Well your going to hear conflicting opinions on perfect enclosures. Some people just are not willing to use tubs no matter how much the ball python would prefer it over a gigantic glass tank.
This is a picture of my quick quarantine setup. 12 quart sterilite tub, 11" Flexwatt hooked up to a Ranco Thermostat set at 95 degrees. One small cereal bowl hide and one water bowl.
Shes probably only a couple months old, so i would feed her ever 4-7 days and use paper towels for bedding so you can see if she has any health issues. As long as the poop is solid and she is eating consistently, then you'll be fine. A weanling rat or adult mouse would be fine once every 4-7 days.
Here's a link to the Caresheet on BP.Net, the BEST caresheet for ball pythons on the internet and will help answer all your other questions you may have.
http://ball-pythons.net/forums/showt...s%29-Caresheet