you might want to bump it up a little but not go absolutly loopy with it.
I am a firm believer in using weight resistance .. just like every other muscle the more you train the more weight you can do and the larger/stronger the muscle gets. I have been using a routine a frined of mine does from MMA and i must say WOOOOOOOOW .. I go really intense but only do around 75-85 reps for abs and obliques