My family used to drive up to WI for cheese festivals every summer when I was a kid. Ahhh yes, eating the yum-yum squeeky cheese curds are fond memories for me.
As for the sculpture garden and the circus museum, priceless! The circus museum made me think of House on the Rock in WI...DAMN! I REALLY wish I would have given you the heads up to see that before you left. It's like the circus museum, but on CRACK, and it takes a whole day to see it. Well worth the visit tho.
And PS, you're gonna have to stop the car more often at gas stations. I have a bladder the size of a walnut and these long driving stretches are killing me! (hee hee hee!)