greetings mohit.

go for cse in nit rather than integrated course at iiit gwalior.

1. cse is more sort after in comparison to it.

2. integrated courese i.e btech + mtech do not hold much value because of shortes course curriculum and shorter duration

3, you mind may change and you may go for MBA at a later stage to enter the management discipline.

hope this helps.

good luck