Hey Siddhant,

That is quite an impressive job, congrats. First of all clear your mind and think properly about taking one year gap, if you very confident and sure that you will be able to crack the seat next year then you can definately do that. If you are not very sure then you better not waste any time and energy to just give a trial or shot because this will of no use at all. I must tell, you have a nice score which will surely get you a seat in very good colleges. So you should think of getting into the colleges. Some the colleges you should check are,

1. BITS, Pilani.

2. Delhi Technological University, Delhi.

3. Anna University, chennai.

4. SRM Institute of Technology, Chennai.

5. Vellore Institute of Technology, vellore.

You should definately give it a try for these colleges, you will get into one of these without any doubt. Think peacefully without any pressure and then decide whatever you want to do. Feel free to ask any questions or doubts. All the very best for whatever you decide to do with your carrer. Hope this helps you.