Hang on, let me read that again...
You want massive airflow but you're watercooling? You don't need massive airflow if you're watercooling. In fact, if you're watercooling EVERYTHING (i.e. chipset as well) you don't need any airflow at all, because all the heat is being dumped out of the radiators.
So, the question is this: are you internally or externally mounting your rads? If internal then go Silverstone Temjin TJ07 so you can dump your rads in the bottom compartment and just run your airflow through that.
If you're going external then case airflow means squat.