Hey Nilo - Welcome to the forum. Hope you can spend more time with us and PLEASE, post pics of your car - Most of us are in the US and cannot get an RSQ3, so we'd LOVE to see pics of your car.
As for the springs, I'm afraid I'll have to defer to some of our brethren in the EU or UK to chime in - since few of us have even any access to new springs/shocks for our cars. btw, where are you - please add to your profile or signature -