I don't remember him asking you how to live his life.
I recommend starting on a 600 if you're gonna get a newer bike. Anything bigger is not needed, especially for a starter. Check out any bike forum, everyone will tell you to start with a 600 tops, most will say smaller or a v twin. I started with an 05 GSXR 600 and love it. I can't see why you would want a bigger, faster bike unless you're tracking it which you are not. Just my .02