The Sig Kadet Seniorita will not spin well. The design of the plane is intended to prevent accidental spins, and to make recovery easy. Because of the wing shape, large tail surface area and the CG location, when it does spin, you have to hold the full rudder and full up elevator to get more than 1/2 rotation, and even then, its going to be a relatively wide corkscrew descent.

The Seniorita is an excellent initial trainer... but not great for learning aerobatics. (It will do some... and with practice you can fly it inverted though.)