Is it worth leaving a NITIE Mumbai admit for IIM Trichy if I'm not sure of specialisation to pursue?

NITIE Mumbai is a renowned B-school which focuses majorly on Operational management. It has the best placements in this field. Also, it admits only Engineers for its MBA program. So, if you want to explore and not sure about your specialisation in MBA, you can choose IIM Trichy over NITIE Mumbai. Because IIM has many specialisation to offer, which will give you a holistic approach of MBA. 

However, IIM Trichy is a new IIM and NITIE Mumbai is very old institute. The placement of Nitie Mumbai is far better than IIM Trichy, but in niche domains.