Discuss light weight issues concerning road bikes & parts.
I ride a 53 f8. It has the same reach and stack as most manufacturers 54 frames. Not sure why you are having so much trouble. That being said I would buy a f10 at a deal rather then getting a f12. Pinarello has not really advanced since the f8. Save some mo ey and enjoy the bike. It is by far my fave bike to ride until I bought the 02 vam.