Thank you for your advice!!
One more question: will Top 15 be a strech in my situation?
My Problem: I tried to go way too fast and I was not paying attention to the details in the beginning of the exam since I had the time management problem on my last exam's verbal section. More thorough preparation is definitely needed for me especially on RC where I relied on my memory for a lot of info due to the time constraint. I think the better strategy next time will be to pay special attention to the first 20 questions, especially RCs.
I am planning to read magazines such as The Economist
and Scientific American religiously in order to improve my RC skills. I don't know whether this is going to make a big difference in 30 days, but I am going to give it a shot.