What is the best initial habitat for a baby BP? The store staff suggested a bearded dragon habitat, which has me confused. Isn't a 100W bulb too hot for a bp?

http://www.amazon.com/Reptihabitat-2...s=reptihabitat


They also have the snake habitat:
http://www.amazon.com/Zoo-Med-Labora...=snake+habitat


Oliver is in a 20 gallon tank now, so I figured it would be best to get him the same size and set up. It would seem less stressful to me to have familiar surroundings when coming to a new home..... right? There is a 40 gallon kit available but I don't want to overwhelm Oliver with a home twice as big as the one he now has. What do you think?

I live in a rural area and do not have any reptile stores near me (that I know of) .....

Thannksssss,
P.