I think most models have been trending south/southeast with that LP in prior runs. The ICON just made a big push south with it. Partly because the HP to the north was further south and 2mb stronger. We’ll see!
To have a parent high to the north and a meso pop in VA acts as reinforcement to colder air. So yes that would be a good thing if you want snow/ice in CAD regions.
That air mass to the north is just so cold, it would probably overcome a bad placed LP. One thing I just saw on the 12Z ICON that bears watching is that it’s popping a meso high in VA.
I think you are in a really good spot. Have wiggle room either way there. Backside wraparound/NW flow does look pretty good here. One thing with this back end wrap around snow, it’s going to be pretty cold so some decent rates will be involved too.