Animal plastics normally provides the heat cable. It's shaped like a rope, and is not my first choice of heating elements. Although, I do believe it does it's job. You can also get some of the AP cages flexwatt ready. (they do not sell the flexwatt themselves) It's hard to say if you'd need additional heating, until you set it up. Most likely not, but I can't be positive.

As for the nightdrop, you don't need that unless you are breeding. If there is a possibilty that you may try it, then I would suggest going for a proportional with the night drop option. Saves you money in the long run. Also, since you are going for such a large enclosure (and I'm assuming you are going to be looking at purchasing a baby), I would suggest using LOTS of hides, or even getting a smaller rubbermaid like container inside that one, until it gets a bit bigger.

I hope this helps some, and