Stop worrying about displacement for a first bike, the biggest thing which makes a super sport or superbike a poor choice for first timers is riding position. Bigger displacement can be dealt with by using less throttle, you can't overcome poor positioning so easily. They're designed to be ridden at speed in a very unnatural position to optimize aerodynamics, not ideal when you're having a difficult enough time getting through intersections and parking lots.
Getting something with a more natural upright position will be far more beneficial to learning how to ride. Even the difference between a naked with a bar and a sport bike with clip-ons is night and day, see if you can find a shop that has two which are similar and throw a leg over each. South of 100km/h their performance is very similar to a super sport, and you can decide if a sport bike is really something you want.