Look long and hard at the Browning Micro Midas III....it's DL is adjustable from 18-28", in 1" increments, and is a 30-40 pound bow. If you need a bit more weight, look at the Micro Adrenaline. It's a 40-50 pound. I believe, though, that the Midas IV is being introduced very soon, if not already.

The Midas III is really fast, I believe rated at 270.....And that's on it's specs, not standard IBO.....Very smooth as well. I bought my son one, he outgrew it, and now my daughter shoots it.