If the price of the bitcoin go up in the 4th quarter of this year, it will not be like the 4th quarter of last year where a solid bullrun happened. History will not repeat itself this year because bitcoin is mostly bearish for the last seven months and another all time high may not be possible unless the big time price manipulators changes their minds.
Did you mean to jump out of the boat before it was overthrown? I think it is difficult for the market to grow at the end of the year. But I hope there will be good changes in early 2019.