A sportbike for your first bike is a TERRIBLE idea. People aren't looking for you, and some would rather run you down than to look at you...It matters not how quick and sexy your bike is.. The street is a dangerous and hostile place.
FIRST,.. take the MSF cycle course. They supply the bike and when you are finished your license is a signature away. Get a cruiser style bike for your first bike. Why? Sportbikes are designed to deliver power and performance way beyond your skill level... its that simple...They have a lower center of gravity, a lower seat height, are much easier to ride and control, and is forgiving to inexperience. They respond well to increases in skill and confidence, and provide much needed comfort for the operator and any passenger you might want to carry. (riding position and fatigue are issues to consider)
They generally cost less and are much cheaper to insure. Take the course... LISTEN to the instructors... Apply what they teach out on the street. Don't give motorcycling a bad name by acting like a moron. Ride safe. Stay alive. Don't be a statistic...Don't be seduced by the guys out there stunting... no, its not cool. Its stupid.
I didn't get 40 years in the saddle by acting like they do...