@CPAJunky — Don't do anything else for the entire seven days?
It's hard to give specific focus areas, because (like REG) the material just isn't connected. Definitely know the “How to pick a profitable project” stuff (NPV, IRR, etc.), the IT stuff, the Budgeting/Cost Accounting stuff, the IT stuff…
I honestly gave up on trying to study for the essays because they draw from all four sections. I'd almost be willing to guarantee that you'll be winging it on at least one, and probably two, of the three essays (I know I did). Just remember that the essays are only 15% of your grade, so if you can kill the BEC-specific multiple choice, mathematically you have to be in good shape.
Edit: Oh, geez, and COSO/ERM. How could I forget that?