I'm 43, a C woods rider and I ride a 2001 CR250. I honestly think I want to stay with a 2 stroke because it simply weighs less and costs less. However, I understand why you want a 4 stroke. I agree, a 450X is probably a better bike for you because it has much more torque than the 250X However, a friend of mine, who is about your height and weight, and is a pilot and also wants avoid the hospital, rides a YZ250F. It honestly felt like it had a harder hit than my CR to me and less usuable torque down low, however he does well on it. I'm sure the 250X will be fine for you and if you're use to riding a heavy street bike, the extra weight of the 4 stroke (over a 2 stroke) and starter may not be a big deal. Have fun! :ride: