Hi Scuba11,
At this point, you now have about 4.5 weeks study time remaining. While it is possible to raise your score 90 points in that time, that goal might be too challenging to be considered realistic. As such, you might want to consider pushing back your Test Date. I think that you would have a better chance of hitting your score goal if you had 2 months of study time available.
That having been said, you do NOT need to correctly answer ANY "hard" or "weird" questions to hit your score goal, so you should NOT be focused on "700 level" questions. Right now, you need to nail the 'gettable' questions, so we need a better idea of WHY you're getting questions wrong.
On this last CAT, in the Quant and Verbal sections, 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?
On Test Day, you must answer every question, even if you're just taking a guess (and you might find it useful to guess on a few tough questions earlier on in each section, so that you don't have to blindly guess on a bunch of questions in-a-row at the end of the section).
GMAT assassins aren't born, they're made,
Rich