I ride a vulcan 900, but my girlfriend is looking at getting her first bike this spring. She is looking at a looking at a ninja 250 because of her height. My only concern is if the 250 will be able to hold 80 for interstate rides up to 4 hours. I was thinking a ninja 500 might be more fitting. Does anyone have any advice or experience regarding the 250 or 500. Also she wants the sportbike style so a cruiser is out of the question.