The 18z GFS agreed with your preference for a colder solution. It keeps the low below us and tracks it towards the DelMarVa and then off of the coast. There is High pressure to our north and Arctic air waiting to press in from the west.
If the low takes this track, and the cold air presses even slightly further south, all of CTP could be looking good for more snow. As it stands now verbatim on this run, the 6 inch snow line gets down to Altoona & Selinsgrove. The 3 inch line gets down to Harrisburg this run. A lot of sleet shows up in the I -81 to I-78 corridor, while the bulk of the freezing rain hits the southern tier.
Still a few days to go, but Plenty of time for this to trend for the better or worse, but I like where things are heading at this time.