Hey OP,
Looks like you are progressing quite nicely. If you can get to a point where you are not rushed on Quant, I am sure that alone will improve your score.
I would suggest signing up for Veritas Prep for $50 and getting the seven practice exams that come with it. When you do these exams, it will tell you for each question what percentage of people get them correct, how long you take to answer them relative to the average, and will tell you what areas you need to work on to improve your score. This is all very useful information which will help focus your study strategy. I would take one practice exam each week and use the study session after your practice exam to review the questions and concepts that you got incorrect.
Also, when taking practice exams, I would try to simulate the test day experience as much as possible. Write the entire exam (AWA and IR included), do it in a quiet environment similar to the test center. This will help you focus and mentally prepare you for the test day experience.
Good luck!