Hi raaz8522,
To start, since you plan to keep studying until you score 700 on the Official GMAT, then you should not 'waste' those last two Official GMAC CATs by simply working through the potential questions in those 'pools' that you might see when you take those 2 CATs. There are plenty of high-quality practice materials that you can use during these next 2 weeks of study (including certain 3rd-party practice CATs/mocks). The specific areas that you should work on going forward will depend a great deal on how you have been performing on your recent CATs.
"Review" is an exceptionally important part of the GMAT training process; your ability to define WHY you're getting questions wrong is essential to defining the areas that you need to work on (and the specific things that you need to 'fix'). As such, I'd like to know a bit more about your last CAT. While a full Mistake Tracker would provide a lot more information, there are some basic questions that you should be able to answer (and the more EXACT you can be with your answers, the better):
After reviewing each section of this recent CAT, how many questions did you get wrong....
1) Because of a silly/little mistake?
2) Because there was some math/verbal that you just could not remember how to do?
3) Because the question was too hard?
4) Because you were low on time and had to guess?
5) How many Verbal questions did you 'narrow down to 2 choices' but still get wrong?
GMAT assassins aren't born, they're made,
Rich