I never had to remove my back seat but yes everything loose needs to be taken out and battery needs to be secured and take a helmet.You definitely don't need previous experience. I would recommend you take everything out of your trunk, including the spare tire stack, and back seat before you go and leave this stuff in your garage. You'll need to do this before you compete anyway.
Sorry totally forgot no I had SRI and Catback exhaust and they let me run h-stock novice but consult before final registration.You say if you have no modifications youd be put in stock, however i have a k&n sri so would that move me up a class? i probably need to read more into it