Prin. L. N. Welingkar Institute of Management Development and Research, Mumbai

According to me IMI Kolkata is best. IMI-K has achieved many milestones in the field of management education. The Institute constantly ranked as a top institute with the current rank of 45th among leading business schools in the country, as per the National Institutional Ranking Framework (NIRF), of the Ministry of Human Resource Development, Government of India. IMI-Ks PGDM programme also has accreditation from NBA and MBA degree equivalence from AIU. The curriculum of our flagship PGDM (Post Graduate Diploma in Management) programme is AICTE approved and industry-oriented that ensures that the students are more than adequately equipped and empowered with knowledge and skillsets to attain leadership positions and add value to their organizations in complex situations.

You have a fair academic record. you should follow the counseling process, but nothing exactly could be said. You should check last year's cutoffs to get an idea about your chances.You will have pretty decent academics if you manage to get 8.5 in graduation.
Assuming, you are gen male engineering. And, by any IIM means old IIMs.
You need to score above 99.5%ile for IIMA. For others keep decreasing 0.5%ile as per the ranking of IIMs.
In case you are not engineering, then the cutoff will be lower. And by God grace, if you are not gen category, cut off will be further low. Remember gender factor is also there. Suppose if you not male then.
Moreover, if you are fine with new and baby IIMs also, then target for 90%.

Without any doubt, I can clearly say that IMI Kolkata is best. IMI-K is redefining leadership and business education to respond to the changing world. At IMI-K students can Involve themselves in the right clubs, committees that can help them to follow their passion, learn new skills and build imperative networks professionally. Recruitment Process at IMI KOLKATA
The Placement Cell at International Management Institute Kolkata acts as a dedicated interface for the students and the industry for seamless integration of all necessary knowledge transfer and coordination. For the students, it helps in creating the necessary awareness regarding employment opportunities, pitching themselves as per industry expectations and in their capacity-building for value-addition to the corporate. For the industry, it provides a platform from where recruiters can identify talent as per their requirements. Visit: https://imi-k.edu.in/.