Will it hit 20K $ by end of 2017
Op it seems to me that your expectation is too high, although, one cannot completely role outs such possibility but from the way i see the market movement, it cannot go higher above $15,000 before end of December this year if it will even reach such height before end of the year.
In bitcoin market since the price is fast to high so I think it will hit first the $15k this year ends. Maybe it can go higher than that, as you know btc price is increasing.