I am too short for my 2000 rm125, I will be buying a new bike soon,which 2002 125 could be lowered easiest? Also thinking about kx100 big wheel, the size is about right. RPM make a big bore kit 112cc, would it be fast enough or should I stick to a 125. I am 36 years old and have stopped growing, and the bike will be raced (mx). Any idea's or thought's would be great.