The storm will be worse in MD/DC area, and more Saturday than Friday. I think most everyone who wants to come (may have to leave early on Friday) will be able to make it to SC before snow is an issue. Then, the roads should be cleaned up in time for their return home on Sunday.
I find that (potentially) big winter storms like this bring lots of energy with them... think about the beautiful snow covered campus and the occasional snow ball battle. They certainly won't have to shovel any of it and the buses will still be running. If a recruit was not relishing the idea of playing football where it gets cold and snowy in November, then this weekend may turn them off. If this doesn't scare them, however, I think that this will be a great weekend for the recruits to bond together and form relationships with the coaches.