Hi kinduniversity,
To start, many Test Takers spend 3 months (or more) of consistent study time before they hit their 'peak' scores. With the timeframe that you have described, you would have just 1.5 - 2 months of potential study time though. By extension, there will likely be a limit to how much you can improve.
In addition, you have to be careful about confusing "quantity" of study with "quality" of study. I've never asked anyone to study 40+ hours a week - and while it's great that you might have the available time to study that much, with that number of study hours, you would run the risk of 'burning out' before Test Day (and that is something that we want to avoid). If you are going to try to study that much, then I suggest that you take one hour "off" for every two hours of study. For example, you could study for 2 hours, then stop for an hour, then study for another 2 hours, then take an hour off, etc.
Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) What study materials do you currently have access to?
2) Are you planning to apply to just one School or are you considering any others?
3) What is the next application deadline after July 6th for this School?
GMAT assassins aren't born, they're made,
Rich