Chennai

Hi Venkata,
You can also apply for single window counselling under Anna university.
The official website is www.annauniv.edu (TNEA 2017) through other state quota.
The applications for your quota will be opened later i think. you please refer the website for further details.
The eligibility is given in

According to me, VIT is a better option than other two universities.

SRM, Chennai is the best option for you and your rank is also good. The closing rank for SRM University, Chennai is 31000 and you are under this.
All the best.

Hello Parth,
SRM-Chennai is a better option as compared to Nirma University.

Hello Ankit,
As per your rank you have slim chances. However, participate in the counseling you may get a seat in 4,5 category in any lower branches.

Yes, it would be great to have a license for opening coaching institute. It's better to have an authorized center to generate good business.