Good looking enclosure. I have a Sulcata (a.k.a. African Spurred Tortoise) and they are pretty cool, but they are the third largest tortoise in the world and do not hibernate, so you need to start planning for an outdoor heated shed for it live in in the winter months. I thought I would be ok living in AZ but it still gets too cold in the winter (we are at 5000'). But you will have a few years before you should have to worry. The other thing is that they are a burrowing species and can dig 4 foot deep burrows, they will push over fences (really anything) if they can see through them. It can be as little as 5 years before this becomes an issue.
As far as food, they really need to eat their native grasses to prevent "pyramiding" and I feed ZooMed grassland Tortoise food as a staple but I will give greens and squashes and cactus as things as treats.
You do need to add a shallow soaking tub for the little guy. They need to soak at least once a day when they are little. I use one of the clay pot things that goes under a planter to catch water that drains out, it works great, they can get in and out of it cause of the texture. They are slobs and make a mess of the water. Mine sun bathes almost all day while hanging out in the water. They still need UVB and calcium supplimentation, pretty much the same as the beardies. after a couple years you can let them roam the backyard, mine hangs out alot in the summer, I bring him in during monsoon season though, it's too wet for them.
Much more info to learn but I am out of time. . . LOL. I will have to find the book I have and give you the name of it, I highly recommend it, it was actually written by some guys here in AZ.
Nick
I just had my dad and boys build one and My dragons are so happy and warm 
