As I believe NorthHillsWx alluded to earlier, it's all about the timing of the phase. Once the phase occurs the thermals improve, we really want a classic miller A, while some models are a bit more miller B / late phase (GFS)
This seems to be the first storm this winter both with legit cold and lots of moisture. Now it comes down to precip type. I think North of 85 will stay all frozen barring significant inland shifts, which seems unlikely with the depth of cold air. As always, expect an early flip to sleet and a more narrow band of ZR than global models show
Model consensus currently has a bullseye on Richmond. I would expect that to shift as far south as Down to 85 or as far north as DC over the next few days. Should have a better feel for how things are going to play out in the next 48 hours or so I think.