Engineering

No, I don't think so. Your rank should be around 100.

You have good marks in JEE advance and hope that you can make it. Although you seem intelligent and the branch you'll get in GSITS doesn't seem to push your potential, I suggest you to take a drop. Also, try to know yourself, how much load you can resist easily. Either focus on Mains, or Advanced or

If you have the complete documents of your OBC certificate, then you should fill your OBC rank.

At this rank for lateral entry, there are only 60% chances that you'll get government college because lateral entry depends on the basis of vacant seats in the second year.

You are too close to it. Last year, IP was closed at 141. This year, as the cutoff has fallen down a lot, you might be getting IP or civil easily, try for mechanical or chemical, but don't stretch for CSE and IT as you won't be able to get it through home state quota too.
Best of luck.

Yes, you have a good ST rank and accompanied with HOME - STATE quota, you'll easily get one out of four branches in
Be your priority with CSE then IT, ECE, EEE and MEC. Mechanical is more wider branch now a days and frankly many options and you don't need a high study load. Still, if you can study a

With OBC, 91 marks, You'll get mechanical or civil in second or third round. Moreover, I would suggest you to push till third round. Also, if you wish to get even better, be a part of spot round, though that might be a bit risky and be a part of that if you secure a seat through josaa first.
Best of

As both Shiv Nadar and SASTRA are good for pursuing B.Tech. But, I reccomend you to go for SASTRA University. There are lots of streams available for you like B.Tech in CSE, IT, ME, civil engineering, chemical engineering, Biomedical engineering, Biotechnology, Food technology, Electrical engineerin