Hi Yuvaraj,
Given the Schools that you plan to apply to, and your score goal, you should NOT plan to retake the GMAT next month. You have too many areas that you need to improve on and all of that study/training will take time. While that probably does not make you happy, you have to remember the REAL goals - getting into one of your first-choice Schools. Without a competitive GMAT score, none of the other factors (re: application deadlines) matter.
Based on what you've described, your prior materials were not enough to properly prepare you for the GMAT, so you need to investigate some new materials. Most GMAT Companies offer some type of free materials (practice problems, Trial Accounts, videos, etc.) that you can use to 'test out' a product before you buy it. We have a variety of those resources at out site (
www.empowergmat.com). I suggest that you take advantage of all of them then choose the one that best matches your personality, timeline and budget.
GMAT assassins aren't born, they're made,
Rich