I got a KLX140L 3 years ago which has a 34 inch seat height, at the time I was 5'3" and fit perfectly on it, I outgrew that bike and found a 2003 CRF450R for a really good price which has a 37.7 inch seat height and it looks perfect. Can I fit on this bike with out tipping over or having trouble? If so, how fast can it go stock?