Umm if one of your feet can touch you should be fine if just your tip toes touch that fine to from what i understand you can shave a good inch of foam off your seat and that will give you a little more to work with, just don't lower your bike unless you are very very uncomfertable with not being able to touch both feet on the ground then I guess you can but not recomended. Umm I'm kinda stupid how many feet is that??
So you are around 5'4" correct?? Well I guess you just need to lower it a couple inches you are going to have to be extra carefull when go through the twisties but sounds like the only way for you man. You can find lowering links on Ebay for pretty cheep or any online motorcycle shop..