getting iiit and nit would be luck for you even after the fact you mentioned you belong to obc else as per your percentile your rank would be approx 1,20,000 in general category and on this rank you can get gftis sftis but getting in to iiit and nit may be possible for you in you home state and that too if you belong to north east or territory like puducherry j&k.

even if you are going to get iiit or nit the branch may not be of your choice and too much celebrated course of that college.

better you look for comming jee mains and if you are able to score than that's good for you if you can't than go for gftis that too will rank better than nit but your chance of getting into that will be higher.