Hi btgsnt,
A goal of 790 is not a reasonable goal at this point. To give you context, only about 1 in every 10,000 Test Takers can score an 800; since a 790 is essentially the same score, the 790+ goal is something that most Test Takers will never be able to accomplish in their lifetimes.
Your actual score goal should be one that would satisfy what your chosen Business Schools are looking for in an applicant. This is one of the reasons why I asked if you knew which Schools you were planning to apply to. It's important to remember that the application process involves several 'pieces' - and the GMAT score is just one of them. Beyond having a competitive GMAT score, you need a strong OVERALL application AND you need to effectively present yourself in each of your applications.
1) Have you done any studying yet?
2) Have you taken any practice CATs yet?
GMAT assassins aren't born, they're made,
Rich