you should search for other threads about starting small. look in the new rider forums, i think there is a sticky about it. and i hope you are humble enough not to try and argue about this, because this board doesn't have much sympathy about newbs thinking of starting on a 750, or unthinkably a 1300cc busa.
you want my opinion... buy a used small bike and ride the hell out of it for at least a year. it will be a year of total uncoolness, but it will be a year that you are alive. i started on a 1982 yamaha maxim. i might not have been the coolest dude, but now i can ride my R6 with some confidence. trust me, START SMALL