My girlfriend recently bought a 2013 KX250F and is a very solid rider in the summer. I have a 2014 ST that I planned on selling, but am considering putting it on her bike for her to use. She rode my 2011 KX450 a few times with the ST last year and absolutely loved it, so I am not concerned with her ability. She is >135lbs and 5'4". Do you guys have any experience with a 250F with an ST? Opinions?