+1I think you should stop driving bikes and leave the 'window' alone. :twofinger
Pic is posted, he already has sliders.
If you take the MSF course then you will learn much more about correct riding technique AND how to not total your machine. What is it, 90% of crashes are riders who have not taken the MSF BRC? Correct me if I'm wrong.
I would also humbly suggest that this guy still spend some time on a Ninja 250. That's a beautiful bike, and I would hate to see it get dropped (as most new riders, including myself at 500 miles, have done). Beyond that, you're also going to be able to learn throttle control, making turns, and navigating through traffic without worrying about a 100 hp engine.