C5 corvette brakes/ Slotted or not?

[chevyshack]

Okay guys and gals. I have a 69 Chevelle that has drum brakes right now. Im going to put C4 or C4 13" brakes on the front. I'll be running the drums on the back for now till I can afford to upgrade to disks. My question is are the slotted rotors worth the extra money or should I just get the stock plan rotors? I know they look pretty and this will be mainly a street car for the time being. Ive yet to try autocross racing. The car will be built on a pro-touring plate form though.