Most of the entrance examinations for MBA test your  Quantitative Ability, Data Interpretation & Logical Reasoning and Verbal & Reading Comprehension. Few exams test your English accumen. More or less, the syllabus is the same. If you start preparing early on these topics, you needn't have to drop an year. These topics are easy to cover, understand and score. The competition and the no. of candidates appearing for the exam makes it feel a hard task.  If I were in your place, I would start preparing early, give a shot at all the entrance examinations and pick the best among my choices. Again, this is my perspective and you can take a call. Good luck. 

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