Hi Wassy,
Regardless of whether you apply for an MBA Program or an MiM Program, studying for the GMAT now - well in advance of when you'll actually "need" your Score - is a smart choice. Based on your prior posts, it appears that you've already spoken with an Admissions Expert about your plans and know some of the potential issues that you might face. Thus, it might help to really think about what you want your future Degree to do for you and what type of career path you want to follow. Once you've defined those plans, you should be able to generally plan out how the next several years of your life/school/career needs to go.
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 take 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 those scores, you should report back here and we can come up with a study plan.
GMAT assassins aren't born, they're made,
Rich