It sounds like you've done a fair bit of research, but somehow managed to miss the most critical piece of equipment to your snake: a thermostat. A thermometer will tell you the temperature (important), a thermostat will control the temperature (critical).
Here is a good thread on best practices when setting up an aquarium for a ball python: http://ball-pythons.net/forums/showt...With-Pictures!
Take some time and really read through the above thread. There is a lot of good information on how to use a heat lamp and a UTH in tandem to regulate temperatures. Also, it gives pointers on how to overcome the humidity battle in glass aquariums.
Last but not least,! There are a lot of really knowledgeable people on this site that are more than willing to help out. Congrats on your new
!