I wouldn't mind a nice retrace back to 16k or so by January 1st. After that it can go full bullmode and blast those targets. Saves me some in taxes 
Blowing the current price below 17K USD next year will surely create havoc on BTC community. It just mean that Bulls are weakening and might be a dejavu on the last bull run. I'm hoping that BTC will above 20k USD next to start a fresh uptrend. Holding the 20K USD mark will mak traders confidence to acquire more and its a confirmation price that a new uptrend form.