I would be afraid the seat would snap off with all that weight on the back. If you were set up perfectly on your last bike, then why not take a level, and plumb up from the center of your spindle, and then measure back to the nose of your saddle. Then put the level on top of the saddle and measure down to top of spindle. Meassure form tip of saddle to front stem bolts and BOOM, your'e in the ballpark of your last set up. By the way, that is a GREAT looking bike!! I want one, but people expect you to be fast and that's not gonna happen anytime soon...