Your chances are pretty slim of getting to the main campus. But then you can always take a shot and go sit for the spot rounds that take place. Make sure you don’t miss that.
My friend get into the Mechanical branch even when he had a rank of 8000. It was even before the NRI quota was introduced. But as you may understand, this was just an exception in the odds. The competition gets tougher and tougher each year and with your rank, I am really worried you may not end up getting it.
But yes, a silver lining for you would be that you may stand a chance at their second campus and that too, for the IT branch. You have certain possibilities here.