Seeing the fluctuations in bitcoin value as of today it seems it will only move within the range of $5500 - $6000 more or less the value before the closing of this year might be $6500 but it will still depend if the appreciation will continue otherwise the value will still remain at $6000..
I think bitcoin has a very strong support from the investors and therefore i think that at the end of 2017 the price of bitcoin will cross 7000$ very easily, i am sure that bitcoin will cross the 6000$ limit in next week. i think the present time is the best time to invest money in bitcoin, if a person want to get some good profit from it.