If you have the time, I would head to Dubuque via hwy 151 out of cedar rapids. I live in Branson and its about a 8 hours drive to Cedar Rapids via 44.54.19,H at center H is a great Ozark road. then 24 to 218 and to cedar rapids. At Dubuque the Mississippi River Museum https://www.rivermuseum.com is well worth stopping at. There is also the Cog Railway Elevator that's a must to see.
On our way to Madison via 151 there's the House on the Rock built by Frank Loyd Wright. North of Madison is the Baraboo Circus Museum www.circusworldbaraboo.org and then do not forget Wisconsin Dells, Its a different version of Branson.
From Madison then head up to Michagan, its really a great spot. One has to try the "Pasties" they are great eats.
Itasca Meridian SE 36g
Road Master Tow Dolly