This is what I have, what else do I need?

[Argentra]

I'll go from end to start...easier.

Yes, you should go to a 20L after the 10. Lower in height and easier to maintain. Also, a broken tank is just a disaster waiting to happen someday, especially when you add heat.

As for your current 10 gallon, that's a great tank for a baby but you have a few changes to make.
The pad is good, just make sure you get a thermostat for it ASAP if you don't have one already. Even the cheaper ZooMed ReptiTemp 500R ($30) is better than a dimmer.
A 100 watt bulb is WAY too high for a 10gal! Lower that down to at most 50watts if you're going to use a lamp and make sure the lamp itself is more than 8" above the lid.
You will want to get a digital thermometer, preferably an indoor/outdoor with probe, ASAP. Acurite are a great brand, found at WalMart and Lowes in the garden/outdoor sections for around $13. Those stick on ones are hugely unreliable.
You will want to include two identical hides, one on each end of the tank. These can be as simple as two plastic flower pot saucers with an opening cut out.

Here's a pic of my 10gal for my rescued pastel BP for reference:


Hope that helps!

[tideguyinva]

Like Argentra said above definitely get a thermostat. Those dimmers for me didnt work at all. I have a 20 and 10 gal. I got a Herpstat II for both of mine.

[sneakerpro]

I have a 20L tank for a young BP and I like it a lot. It is big enough to have everything you need inside, and not be too cramped.

I have a standard low wattage black light bulb for night viewing, and I love it.

If you have problems with humidity, which I anticipate with a screen top and a lamp, then I would recommend covering the screen with aluminum foil. Secure it with duct tape, and leave a hole about the size of your lamp for airflow/lighting/heat. This will raise ambient heat and also trap humidity.

That is the best advice I have gotten as far as husbandry goes.