OKEY DOKEY! There Miss Congeniality, but who said anything about cardio?
Try thinking outside of your box for a moment and looking toward creating more oxygen debt, thus increasing metabolism, and burning more calories during the recovery phase. Sory I burst your cardio for fat loss bubble.
Besides, what I have learned and experienced is that ab work goes best with whole body movements that activate the entire torso, then hitting them as secondary with weighted twists, situps and lateral bends afterwards. That 1000 rep for wonderfull abs crap has been debunked for a while now. As has localized fat burning.
And what to feed them afterwards? Same thing you feed any other major muscle group. They don't "eat" anything any differently than any other muscle group.
btw- I thought from your fat burning thread that you were starting at 230, not 240 down to 230.
For someone who knows so much, you sure ask a lot of questions.