I've wanted to go all the way up (UP). The Lakes are great places in the summer, like the Rockies and Black Hills.Thanks. Michigan is blessed with a great deal of scenic coastline. Very pretty, especially in autumn. If you ever make it back, you should do the tip of the mitt all the way up to the Mackinaw bridge.
I've enjoyed MI and WI and Chicago; I enjoyed the AHRMA at Road America. Duluth and Grand Marais are great places. The Toy Hauler is great for vacations. Combine travel with some bike rallies, a couple of bikes. Great stuff.
For sure I'd like to see Mackinac Island as well.