I am taking the exam on the same day as you and I might have some good advice. I actually took the exam about a month ago and canceled my score. Here is why...
I had been studying directly out of the
MGMAT books for about 3 months (started studying around October). Went through them about 3 times and felt really confident. I focused on Quant almost exclusively because I went through verbal and was like this seems pretty easy to me. I took 2MGMAT exams and 1 GMAT.com exam and average a 610 on all 3 ( Q41 V35). I felt pretty good going into test day. I was even like, on test day I will work extra hard on verbal and that score will go up. On test day, I got in there and right away notice how the quant questions were more similar to the GMAT.com test and wished I had focused more on all the official questions and not on
MGMAT tests and questions. I knew I had done terribly and then came the Verbal part. These were much harder than anything I had seen before. I knew I was no where near my practice scores so I just canceled the score.
Why am I telling you this, because I dont want you to make the same mistake I did and go in there thinking your verbal is better than you think. In fact, it it way harder.
Forward 3 weeks and here is what I have done so far and my plan going forward. I am still using the 5 Quant books from
MGMAT. For verbal, I got the SC Grail and CR Bible, and still using
MGMAT RC. It took me about a week to go through both SC CR books. After going through them I realized that going into the exam I was clueless and let my practice test scores and being a native speaker ruin the reality. I am actually taking this weekend off (personal reasons) and starting next week I am going to start doing as many official problems that I can get a hold of-- OG12, OG Verbal, OG Quant and OG 11. If you are trying to work the problem and then really work on understanding the questions it should take you about a month. I am also going to take a practice exam each weekend until the real thing to work on timing, real time testing feeling (taking 2
MGMAT exams and GMAT.com test 2 and redoing GMAT.com 1 to get more of the real questions).
Not to go against any other advice, but I would not spend a whole lot of time on any other materials, basics are basics. The
MGMAT books are solid and seems like you have a good grasp on the basics (I would suggest getting the CR Bible and SC Grail though--better than
MGMAT counterpart). But with about a month to go, nothing beats working on real gmat problems. I got this advice from someone on here who was in my position as well. You should really see an improvement and will be confident in the questions presented on the real thing.