light bikes are extremely difficult to use on the highway considering your weight. I had an old 500 that i started on, as well as a 440. Around 75mph, the wind would just toss me and the slightest bit of wind would lift me or shift me to the other side of the lane. Granted, i'm not a big guy (6'0", 170lbs), but if you're planning to do ANY highway riding, i'd stay away from the 250. But like the_good_guy said, it's a great bike to learn throttle control, which will prepare you for your next bikes thereafter.
-=bmacd=-