Hi ajoshigc,
Approximately 5 weeks ago, you posted that you had taken your 1st CAT/mock (and scored 530). Have you taken any additional CATs since then? If you have, then how did you score? If you have not, then you should plan to take a NEW CAT sometime soon (perhaps this weekend) so that we can assess how effectively your last month of studies have been. This analysis is important because before you start working through lots of additional practice questions, we need to define WHICH types of questions you should be focused on (and any other areas that might still need improvement).
In addition, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) What type of study routine have you been following over the last 3 months? How many hours do you typically study each week?
2) Have you used any other study materials besides the books that you mentioned?
Goals:
3) What is your overall goal score?
4) When are you planning to apply to Business School and what Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich