Hi GoalHSW,
To start, a 730 is an exceptionally high initial CAT score - that score implies that you're a naturally strong Test Taker. As such, you might not need that much study time to score at a high level on the Official GMAT. Before we talk through how best to proceed with your studies, I have some questions about how you took this CAT and your goals/timeline:
1) Did you take the ENTIRE CAT (including the Essay and IR sections)?
2) Did you take it at home?
3) Did you ever do ANYTHING during this CATs that you couldn't do on Test Day (pause the CAT, skip sections, take longer breaks, etc.)?
4) Did you take this CAT before?
5) What is your goal score?
6) When are you planning to take the GMAT?
7) When are you planning to apply to Business School?
The 6 GMAC CATs are the most realistic CATs on the market, so you don't have to take another CAT so soon.
GMAT assassins aren't born, they're made,
Rich