Hi batman08,
What experience do you have with IR so far? Have you taken any FULL-LENGTH CATs or the Official GMAT? If so, then what were your scores?
I ask because many Business Schools have publicly stated that they do NOT factor in an applicant's IR score when reviewing the overall application. In real basic terms, your IR score doesn't matter. All that having been said, you don't want to tank the IR section on purpose, since that might 'look bad' - as such, you should put in a decent effort on Test Day, but you shouldn't be spending too much of your study time focused on IR. The points that you're looking for are in the Quant and Verbal sections.
GMAT assassins aren't born, they're made,
Rich