If this support still remains with bitcoin, then I believe that $4k is reachable before the end of 2017, as daily new people are coming in bitcoin world and are buying a piece of this new Internet money and holding hoping to become rich.
So if this pace is kept constant than this goal will be reached before 2018 very easily.
That could be possible but I still think that the bigger traders are at this moment consolidating their earnings rather than trying to get even more, so I think we are going to see bitcoin dancing around the 2800 and the 2300 but eventually we will see an increase in price in just a few months.