Watch bike races. There is a guy that's 5 foot. He has to get off the bike to hold it up and his knee is on the seat. Don't write off riding. I'm 5'5" and I had my 07 gsxr at stock height. I just shaved my seat wore leather work boots with a Dr.schols insert. Shaving the seat will get you over an inch. Like was stated about factory lowering kits are ok but as you found sport bikes don't really offer that. Find a local motorcycle forum and explain your situation. Maybe somebody will let you sit on their bike. Most wont but some will. A bike is more of a baby to riders than a car is to a gear head. But don't give up. Soon you will see the tach pass 16000 rpm.
. It's a great feeling. I took my gsxr to 17600 all the time.