Everything I have read says that they do not do well over 88 degrees. There humidity needs to be around 80% as babies and as they get older they will drink more water and can tolerate lower humidity.
I got Priscilla for Christmas in 2006 she was just a few months old. I housed her in a 20gal long aguarium with plexi covering 3/4 of the screen lid. Her basking area was heated with a UTH that was stuck to a tile the sat 1/2'' under the glass of the aquarium. She had a hide over the UTH and a hide on the cool side. She was kept on about an inch of reptibark with a water bowl in the middle. I completely saturated the substrate once a week and misted her every 2-3 days. She is now 4 feet long and about an 1 1/2 to 2 inches in diameter. She is a great eater and has only refused meals a handful of times when she was in shed. She will eat anything live or F/T. We just picked up an Elvis to go with her back in March.
Priscilla graduated to a homemade enclosure about a year ago and has escaped from it 4 times so now she is in a rack. We are constructing a new dual enclosure that will house both her and Elvis side by side. They really are gorgeous animals.
Good Luck!