I had one of these planned for tomorrow but then called it off because it was calling for rain. Dropped the bike to the dealer for the 15K service and made other plans. Now they are calling for 70 and sunny all the way around the lake.
My route would have me leaving Grand Rapids at 5am (maybe a little before) going north then west thru the UP, south thru WI and back east/north to GR.
Would be running slap in the dark hours and two lane in the daylight. The deer are starting to move here so north it's going to be even worse. I figure I could make the run in about 18 hours putting me home by around 10pm. That would only be about 4 hours of night riding, two in the start and two at the end and those would be all slab.
I would try to join up with you for part of it but the wife and I will be doing a 4 day tour of the north lower MI on our bikes. I'll be running some of the same roads it sounds like you will be. I'll keep an eye out for you.