Hi Pimy
First of all.... Fantastic Verbal score. Coming to your concern on the Quant section, here is what I would like to say. Quant is the much easier to improve than Verbal. It is easy to say though, but very much possible. One of the biggest advantage in Quant is that, there is only ONE answer, unlike Verbal, where you can get down to 2 possible answers. That makes Quant easier.
If I were you, I would start with the Kaplan (trust me, these guys have invested to give us the best). Though there are ot os books, Kaplan is THE for quants. Go through the complete tutorial. Stick to ONE book. Running aroung with Kaplan, Princeton and other non-official guides willshift you from your goal. Hence, stick to kaplan. It will take you 2 weeks to absorb. When you find a really tough question kaplan, which you are unabel to answer, POST THEM HERE. We are here to share. We will go to the most detail point to help you in this.
And not to forget, the OG. After you complete the Kapan in 2 weeks, go ahead take the OG drills. That will show you where you stand. Even if you get less than 80%, it is ok. You will still have one week to concentrate on this.
Do not give too much focus on the Probablty section and as a matter of fact, no too much time of any of the section. That does not mean, GRAZE over the topics. One thing is, which ever section or area you study, GET everything out of it. Understand the concepts, clearly. If you are unable to, i repeat, Post them here.
One of the good thing is you are RAW. Hence you can get the concepts clear. Unlike us, who are stuck with what we learn and difficult to change our mindset in solving problems. You know what I mean. I hope this helps. To end this.... "IN ONE MONTH YOU CAN REACH MORE THAN 80%". Start with Kaplan tutorials, solve all problems, adn take a diag drill in the OG.
Regards