If I can leave earlier, I will, and I'll shoot reveal a call via cell phone so everyone knows, but I don't know.  I'm already skipping out of three hours of work as it is, and I'm not sure how much more I can push it.  Not that Friday afternoon is very heavy work, or anything.
My plan was to pick up some drive-thru Taco Bell or something like that in Grand Rapids, so I'll essentially just be driving straight through.  I think the drive is technically only 4-4.5 hours, but it's the Friday evening traffic that I won't know how to predict, and which may slow me up.  Plus the fact that I'll be pulling into the Chicago area right around 5 or 5:30.
Still, if I can pull my departure time up to around lunchtime, then I can get there nice and early.  Can't promise that yet, though.