Have a look at Corbin seats, (www.corbin.com/)I´ve heard they are lower, but they arent cheap. You could slide the forks up through the clamps on the front end to lower it a fraction, but I wouldnt recommend it, would change the handling characteristics of the bike and thats not a good idea. I´m not that tall either 5´7" I find experience makes the difference as it doesnt worry me at all.