Joining JBIMS for MBA without any work experience may have a slight drawback. Whether the overall experience will be worth it or not, depends on the exact purpose with which you have started on this journey.

With all honesty, your lack of experience and academic gaps will have a negative impact on your placements. Getting higher packages will be almost impossible as companies might object to your flaw in the profile. I am not saying that MBA will be a bad choice, but it will benefit you academically and not financially. It will increase your knowledge and skills and add value to your CV thereby improving your initial situation. But as far as placements are concerned, you will be slightly at a disadvantage to others.

You will be eligible for the final placements only and not the lateral ones. Many companies may or may not put filters on age, work experience, and academics. It all depends on the particular company and your luck. With excellent communication skills and content building, you can make your way into the interview and much more. But you have to strive hard for a very long time as the race is a difficult one for you. If you can prepare well with no pressure or expectations, especially during the summer internship process, you should be fine.

Coming to the knowledge and skills that you will acquire during the MBA, it will certainly have a positive impact on you. You will be able to get rid of negativity and focus on acquiring maximum knowledge. 

Still, at the end of the day, I will advise you to get a job and get a level of experience to make your journey a bit easier.