Kawasaki Ninja ZX-6R 636 for ”beginner”

Meal Together, first short to my person: I am currently 23 years old and have been driving a Honda NSR 125 since I was 16 years old I made a 20th driver’s license class A, but I stayed with my Honda because the money for a new purchase was not there… Now I finally finished my 2nd training and the money is there, so I looked around a bit and fell in love with the Kawasaki ZX-6R 636, new price according to dealer somewhere at 12.00€ +/- depending on design. Now my question to the motorcyclists among you whose rear has been sticking to a 2wheel for longer than a big scooter: Bad idea? Good idea? Is the motorcycle suitable to ”begin”? I can estimate myself pretty well and am actually not the type of the mentally ill is racing at the speed where is of course a fine thing, otherwise I don’t need to get a super sportsman. By the way, I am more or less tall, so about 183cm. I was already a pro-occupied but I didn’t see how to race with a super sportsman at all?