Okay so I went to my local pet shop today, and they didn't have any Ball's in stock. They are going to order me one in. I bought a 3ft Vivarium, a Heat Mat and some flooring. The Heat mat is placed INSIDE the wooden vivarium, but I was assured this was okay, and the instructions specified that the heat mat must be inside the Vivarium if it is wooden viv as this is an insulator. The heat mat is 22w and Infrared long wave heat. Here are a few pictures about how it is set up:

http://imageshack.us/photo/my-images/153/img0133yz.jpg/

http://imageshack.us/photo/my-images/24/img0134xn.jpg/

http://imageshack.us/photo/my-images/196/img0135yw.jpg/

http://imageshack.us/photo/my-images/805/img0136du.jpg/

My main question would be: Can I still fit a thermostat to the heat mat or is it already too late? Any other comments would be much appreciated.