it's very posible at this year , in my opinion :
if the reward mining of bitcoin (after halving) = 25/2 (12,5)
it's very posible the bitcoin price = current price x 2 ($800-$1000)
it's Just IMO

Yeah its quiet possible by the end of this year as halving will give us some good price and it is expected that the price would be much higher by the year end, so bitcoin reaching this value is quiet optimistic.
prices will not necessarily go up in one or two months after block halving maybe after 1-2year's