Pune

During your preparation, your prime target should be gaining knowledge rather scoring good marks because if you have knowledge then you can easily crack any exam. Secondly, you must structure your study schedule and give equal importance to all the subjects being asked in the exams. You can easily get any college.

There will be less number of seats for management quota.

I would have preferred Mindscripts and Aptech after that.

Dear Mrudul,
You have already answered your own question. You can pursue graphic design course from Pune. But a 3-4 months course will not help you learn a lot. You will at least have to spend six months to master your skills.

Hi Ankit,
As you have mentioned that you are going to complete your Bachelors Degree in 2017 then it would be good if you go for SNAP test in 2017 only because the eligibility criteria to qualify for the SNAP test says:
Graduate from any recognized / statutory university or institute with a minimum of 50% marks (45% for SC/ST).
Programmes which require specific discipline/ subject specialization need to be checked for eligibility as given by the respective Institute. So it would be better if you complete your graduation first and then go for SNAP test.
Good luck!

Its placements and internship opportunities are very normal and nothing extraordinary, so I would suggest you to go after BIMM, SIBM and Flame Pune as substitute colleges.