Thanks for all the tips!

MarkS: Houston is actually VERY humid...so I revisted the Red Foot Tortoises and I really like them! The fact that their diet is a little more varied than the sulcatas (vegetables and fruits..instead of mostly grass) makes me feel more confident about finding him the right foods....and I think he'd be ok in the apartment until we moved.

Because we aren't worried about the size restriction in the long run, if my husband is really set on the sulcata then we may have to wait another year or two to get him so that he doesn't outgrow the apartment.