Well man I don't think 2k$ is possible now that the price of bitcoin is sitting at 668.2$. IMO It will sit at 750$ in the best in the coming block halving that is near because I don't think it will rise more now that halving is near.
$2000 is possible in January 2018. It will not be so high in January 2017. The price could be around $1000 then.
I think we will see 2k in january 2017 for sure
Maybe at the end of this year but sure for next one
Can't be predicted exactly, but has got more possibility is there to touch $1000 with the gradual increase than a much bigger value of $2000.