I think this will be a significant storm with a good sign being the massive change in the teleconnections following it.
I don't see why it wouldn't keep trending south if the 50/50 low is as strong as depicted. Last December we actually got screwed by a system that was too far south, will a south trend repeat itself?
Afterwards we should enter an extended warm-up as AO & NAO soar. The -EPO could keep us on the colder side first 1/3 of December though.
January could surprise us this year, it's sort of been the neutral month this decade with a mixed bag of events.
February has been terrible post 14/15 and of course there's always March to the rescue with the massive late season blocking that screws our early spring weather.