If you change the front to rear attitude by 1 1/2", I hope you have an ape strong back to with the vulture arms if you aren't going to correct the riding position.
There are 3 topics on the board that will generate somewhat heated discussions: what tires, what oil, and should I install a tre.
My personal preferences are: AVON Storms (more than capable high mileage sport touring tire that the race tires on the street crowd say are hard as a rock and neutering the performace of the Busa), Amsoil Full Synthetic 10-40, and No. There, I've done it. I've gone and opened up the Pandora's box.