Simple question, but what would have happened if you reraised him preflop? If he reraised you back, you'd know he had KK/AA. If he just called, he'd legitimately think you had AA (or possibly QQ) and help you get him to fold with consistent big bets, or (if you prefer) keep the pot more manageable. Also the more cards you reraise with the harder it would be for an aware opponent to precisly determine what you have.

Of course, that may just be a simple ABC approach ...