Ok I am 16 years old I am going to buy a 1991 Honda XR250R and then in about two years, When I am 18 or 19 years old I am going to get a Brand Knew 250 2-Stroke Motocrosser I hope. The question I want to ask is if I ride the XR250R 4-Stroke for 2 years or so would like a Honda CR250R be to much for me? I would like to get into motocross and I need to start out on like a 4-Stroke. I would not want to downgrade from a 250 4-Stroke to a 125 2-Stroke because I will be dissapointed with having no low end power. So if I ride the XR250R for about 2 years would like a Honda CR250R or a Yamaha YZ250 be to much for me? Power Wise and could I ride trails with them also? Thanks Matt