Hello Shikhar,

well congratulations,both the courses have their own pros and cons coming to them,of course nit is better than iiit kancheepuram but in iiit as you have mentioned its a dual degree it has its own advantage.

So it totally depends on your intreset whether to do dual degree or not,but you do have a lot of time.According to my knowledge i can suggest you nit allahabad.

Goodluck,

Thankyou.