2003 Kawasaki Ninja ZX-6R Seat height?

I am about to buy a 03 Ninja ZX-6R for my first bike but im a little worried about the height. I am 5'9" and im not 100 percent sure how comfortably ill be able to sit on the bike. My friend has a ZX9R and i have a little trouble touching both feet at the same time but i CAN hold the bike up but not very well. How does the ZX6R compare? Any other shorter riders out there? Please let me know.