........Hmmmmm
Unless you build a rear drop-out jig you may have problems with the rear not tracking properly. I'd also want to add an increased diameter wheel on the front (22"?) just to even the bike out slightly (so you're not sliding down the seat etc).
I guess the last point is that the bike has been built with certain engineering rules and theroys to maximise comfort, efficentcy and safe handling. I'm not saying it will happen, but there's a chance the composure and performance of your bent could go out the window with such upgrades.
So it's a bad idea in my opinion, but hey I'd love to be proved wrong
