very nice setup.
That said, you have to put the UTH on at least a lamp dimmer switch (10 bucks at home depot) and I recomend you put the lamp on a thermostat. The zoomed 500r thermostat is about 30 bucks... and will work if you can't afford the better helix, Ranco, or herpstat. If that is not possible, put the lamp too on a dimmer switch (not the same one as the UTH.) If that is a 20gallon long tank, you will want a 60 watt CHE. if it is a 30gallon long tank, you will want a 100 watt CHE.
Only other thing I see is the bulb in your lamp. I would get rid of the bulb, and get a ceramic heat emitter instead. Ball Pythons do not need a light, and I have found that it can stress them out. Plus, you have to keep the temps right all the time.. night and day. You can NOT keep that light on all the time. You will totally stress it out!
Before we get much farther in giving you advice, you have to get the digital thermometers and hydrometer. you can get an Acurite from the hardware store.. It measures temp and humidity, and has a remote probe that you can put on the hot side under the substrate... and measure everything for $10 BUCKS.
Good job so far tho!
Mike