Surface low location is pretty locked in. It'll move around a bit but no big changes this close probably. The bigger issues are how far north the snow is able to progress north which depends on the orientation of the system to the southwest and how the digging northern energy phases with it, and how quickly additional northern stream energy cuts off the progress of the moisture streaming north. In the perfect scenario the digging energy causes a part of the trough to tilt negative which slings the precip back farther north and west, which may happen for a brief period if all goes well. Getting the trough to be more neutral would be good as well but it probably won't last long as the additional northern energy will shift the winds behind it back to the north which shuts off the precip, and can be seen pretty dramatically on the 12z Euro snow maps.