I guarantee you if you are measuring temps and humidity with those crappy stick on dials that all of your temps and humidity are around 10* or % off.

Since it looks like you will be purchasing things online for the most part I will give your a brief quick fix to make the tank a little more comfortable for your new scaley friend.

For right now I would just keep one light. Is it a black light or a blue night time light? If it is the later, just keep that one on 24/7 so you can still maintain temps at night without bothering your snake with a huge bright light above him.

Now here is the fun shopping part. Go to the HOME DEPOT or LOWES. Get a piggy back lamp dimmer for the lamp. They look like this: http://ecx.images-amazon.com/images/I/31WPQ76JOlL.jpg You might have to ask a lot of people where to find this. One person might tell you they don't have it but trust me they have it. Now you must search for the ever eluding accurite digital thermometer hygrometer combo. You should be able to find this is the gardening or seasonal department with the other themometers and such. This particular one looks like so: http://lib.store.yahoo.net/lib/partshelf/ps-00891.jpg See how this one has that little black probe thing? That is super important. It is supposed to measure the "outside" temp but in this case we are going to use it to measure your hot side temps.

Alright now we are done with our shopping trip! time to set everything up.

First step is to figure out how to use your light dimmer. Here is a thread that discusses how to set it up: http://ball-pythons.net/forums/showthread.php?t=73275 . Plug this into the wall and then plug the lamp into the dimmer. This dimmer will be your temporary rheostat and will allow you to control the temperature a bit more.

Second step is to set up the accurite. Since you are using lamp heat, you should put the probe on top of the substrate. For now you can just let it sit there, do not fasten it to anything. Put the ENTIRE accurite unit in the cage on the cool side (not under the light). This will measure your cool side temps an humidity.

Hope this helps!