Can't wait to see it :) I can already tell you they'll love the color.
The easiest and cheepest way I have found yet to start bermuda and get it nearlt drought resistant is simply to buy a bale of bermuda hay and till it in. You can't really kill the bermuda and truning it with a tiller will break it up into smaller pieces that will set roots deeper and grows very well. A small square of bermuda is not much and will start a small yard very quickly.. Just break up the bale, turn it into the soil and water every other day in a week you have the starts of green shoots and a good lawn.
No wonder Carl married you-that's a genius idea. We've got trenches and holes all over the back yard and it needs tractored around anyway. We've even got an old tractor to do it with, the problem is getting my husband to do it. I think if I get on the tractor and start it & make him think I'm going to do it...that'll bring him running.