My brother is a mechanical engineer who took the path you're planning to take. You can surely do ACM from NICMAR. Although, I will recommend that you do it from the Pune Campus. 

It is better in terms of Placement opportunities available. It is more diverse and will help you in being exposed to varied perspectives.

A lot of opportunities await you as a Mechanical Engineer in the Middle East in HVAC and in the MEP Departments of Construction Companies.