If you're able to convince Kashmiris to be part of India then I'm fine with it .. (But Kashmiris are highly aware about their history) if I think as a Kashmiri it'd boil by blood down to see Indian troops in the valley .
as far as Pakistan, you need to take Pakistan into consideration as some part of Kashmir is also in Pakistan (and they are pretty happy to be part of Pakistan, I don't see Indian flags getting waived there), also to resolve the LOC issue and to consider it IB.
Yes, and a plebiscite on your side and our side would make things clear for you..