you wont have that problem, what we are getting at is that:

This is your first event, many clubs do not recommend r compound tires for novice drivers. Infact some instructors wont even ride with new people who have race rubber on the car. It hides a lot of mistakes, you will learn a lot more about your car with street tires on it. You are not losing anything running street tires. They make a lot more noise before they completely let go, r compound tires are a totally different animal. I assume mike has done his fair share of events if he's racing spec e30, so im sure he's heard this all before for new people.

None the less food for thought.

Dont worry about ripping your street tires up, ive had azenis on my miata for 2 events and you couldnt even tell they've been driven on.