I have a T12 enclosure and I love it. Personally, I'd get the heat tape from reptilebasics.com (with hardware) because you can get a piece as big as you want. It's also only $3/ft. I personally run a 12x24 heat tape in my enclosure. I would also suggest getting a radiant heat panel (RHP) because unless your room is properly warm, the enclosure will get cold.

I like the glass sliding doors and if you get the plastic "pull" tabs from Lowes, they're easy to open. The two options I'd get would probably the cage locks and lights. Not only is it another wave of defense against your animal escaping, you can keep the humans at bay as well.

I'd check out this thread about the AP-T8 setup. You'll find a lot of good questions, answers and comments here.
http://ball-pythons.net/forums/showt...-With-Pictures!