At 99199 rank it is tough to get a cse seat at thapar and that is even tougher if you are an outside panjab candidate but you should still apply for the counseling, also if you have good marks in your 12 boards then those marks can help in admission also if compromise a bit on your branch and take another branch except cse then you have an option of branch change as well on the basis of your first year cpi.