as one of the newbie riders, let me just say that the class i took had several seasoned riders in it and they didn't do any better at the excercises than the new riders like me who never even touched a bike before that class.
If you are interested in the advanced, i would take the beginner as a refresher course and then take the advance 6 months later. Especially because you use your own bike in the advance... you don't want to dump your own bike. Good luck!
