West Bengal

If your location is your priority, I would suggest google some of the good universities which accepts JEE Mains marks. Though, moving out of your location, you can get any NIT accepts top 4 or 5. Some better suggestions are BIT-Mesra, NIT-Bhopal, NIT-Durgapur, NIT-Kurukshetra, NIT-Raipur.
You can also try:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

The percentage required for participating in WBJEE counselling is 45% with PCM as compulsory subjects which is the only way to secure admissions into the Jadavpur University. Rest, your WBJEE rank will decide whether you will get into or not.

Akash is not recommended for JEE Mains and Advanced coaching else it's advisable for Medical and NEET Coaching only. For JEE Mains and Advanced coaching in Kolkata, you can prefer for FIITJEE, Resonance or Pathfinder.

With 75,000 rank, you can get private colleges like Dr. Sudhir, Guru Nanak, JIS college, Durgapur College of Engineering and Management, BBIT, etc. All these colleges are same. What I will advice you is that either you go for private external counselling or choose the college from above list which is near to your house.

https://www.shiksha.com/b-tech/resources/wbjee-college-predictor
Here is the college predictor link. You can go through the link to get an idea about the college. Good luck.

See, first of all, relax. Life is not just about one exam. Move in to next and I will recommend you to go for a college with less fees. Why I am telling this because you can use that money in your MBA. Yes, if you can tactfully invest your 4 years in CAT or IIFT preparation, you can surely get a good MBA college and once you enroll in it, you can expect a good package minimum of 12 LPA.
Best of luck.

Check the list of all B.Tech in Instrumentation Technology colleges/institutes in India listed on Shiksha at the link provided below. Get all information related to admissions, fees, courses, placements, reviews & more on B.Tech in Instrumentation Technology colleges in India to help you decide which college you should be targeting for B.Tech in Instrumentation Technology admissions in India. https://www.shiksha.com/b-tech/colleges/b-tech-in-instrumentation-technology-colleges-india.

Hello Avik, I feel your rank is a little bit low. However I am attaching a link that will predict college for you. https://www.shiksha.com/b-tech/resources/wbjee-college-predictor.

1. NIT Kurukshetra
2. NIT Durgapur
3. NIT Bhopal
4. Jadabpur University.