dude, it doesn't matter what size bike you get just as long as you don't act like an idiot on it, im about your size shed and inch or 2 same weight and my first bike was and is a yamaha R1. i thought it would be to much power for me but the price was right and i wanted a bike. i got use to riding it easy and got better at riding it. i didn't go over 70 with it until 2 years after i had bought it. i feel comfortable on it size wise and now i feel i can handle it like ive been riding my whole life. good luck hope this helps.