Hi ! In JEE mains you can't get a good college. Not even the worst nit. If your luck is very good and for vacancy you might get last nit Manipur with bad stream. You have a good board marks. You can also get Heritage institute of technology, academy of technology and other institutions. As per your BITSAT marks, you may bits Goa that is also low graded branch. So hope you understand and best of luck to you.