FWIW, the Draco as an SBR is very unsatisfying to me. By the time you go through the trouble of getting the tax stamp, chopping/modding the trunion, finding a stock that you like, etc.... you end up with a rifle that is only about two inches shorter than a Yugo underfolder....then add a forward directed muzzle device to the Draco (a requirement for me) and you're down to only an inch shorter.
For my mileage, I'd just get an underfolder...but then again, I'd never ride the bike in Stannicus' avater either.
I like your thinking. I originally put something up for trade for a Draco only. Then I thought about the underfolder and it made a lot of sense.