Hi WillMont10,
Many GMATers spend 3 months (or more) of consistent study time before they hit their 'peak' scores, so giving yourself 4 months of study time is a smart choice. Both the IR and AWA/Essay Scores are separate results that are NOT part of the your Overall Score out of 800. Many Business Schools have publicly stated that they do not use an applicant's IR score when evaluating an application, so you likely have nothing to be concerned about when it comes to your IR performance. However, if you're interested in what a specific School/Program thinks about the IR score, then you should research that School directly (you might also consider contacting the School to ask). Many Programs expect applicants to be able to write at a reasonable 'level' (re: a 4.0 or higher out of 6.0) - and that is fairly easy to do on the GMAT (and there are a number of different 'templates' that you can use to help you work through the AWA).
Since it sounds like you're just beginning your studies, then it would be a good idea to take a FULL-LENGTH practice CAT Test; you can access 2 for free at
www.mba.com (and they come with some additional practice materials). If you want to do a little studying first, so that you can familiarize yourself with the basic content and question types, then that's okay - but you shouldn't wait too long to take that initial CAT. That score will give us a good sense of your natural strengths and weaknesses and will help provide a basis for comparison as you continue to study. A FULL CAT takes about 3.5 hours to complete, so make sure that you've set aside enough time to take it in one sitting. Once you have that Score, you should report back here and we can come up with a study plan.
I'd like to know a bit more about your timeline and goals:
1) What is your goal score?
2) When are you planning to take the GMAT?
3) 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