Why are you thinking about NSIBM in the first place? Try for competitive exams and try to get into a top-tier management school.

As far as NSIBM is concerned I would not suggest it. The curriculum is not up to the mark and you need a good education to better prepare you for the future. 

The following can be the reasons if you are joining this college:

• You have scored low in UG.
• You won't be able to clear competitive exams with a good percentile.
• You are a resident of Jamshedpur and it will provide you with a location advantage.

If you are pursuing MBA then join a good college.