Hi iFlashz,
When you take the Official GMAT, you have to option to take the IR and Essay sections at the end of the Exam - meaning that you can face the Quant and Verbal sections (in one order or the other) early-on when you are most alert and have the most energy. In that way, you don't have to think in terms of 'skipping' the Essay and IR sections - and if you don't want to try very hard, then that's your choice.
However, you should certainly try your best on those 2 sections since you do not want to accidentally create any 'weak spots' in your application. Even if you think that the Essay and IR Scores will not matter to your applications, you have no way of knowing that for sure. You might also think in terms of how that choice might reflect on how an Admissions Officer views your profile - if you're not willing to spend 30 minutes writing a simple essay, then how will this person handle a full MBA Program? You don't have to take those two sections 'seriously' if you don't want to, but the overarching 'risk' of ignoring them completely is a big (and ultimately unnecessary) gamble.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied? How many hours do you typically study each week?
2) What study materials have you used so far?
3) On what dates did you take EACH of your CATs/mocks and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your overall goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School?
7) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich