Dear aspirant!! Congratulations on all of your ranks!! I would like to inform you that you'll surely get CSE in kiit as the cutoff has been 5000 in recent years,have a good chance of getting CSE in SRM main campus as the cutoff has been around 10000 in recent and as far as VIT in concerned you don't have any chances to get CSE in VIT vellore but you do have a chance of getting it in chennai campus and surely get it in Amaravati campus.

Now it's totally up to you what you'll choose,do some research on placements,faculties & infrastructures of all these colleges and reach a decision. 

Hope that helped.Thank you