I take it you are planning on taking HWy 151. There is not much between Cedar Rapids and Dubuque. Monticello is only about 3 hrs for the Dells. Or my way of driving 4hrs. If you could drive to Kieler Wi the Rustic Barn is good, but thats another hour. As for the mentioned RiverView Ridge, I have not stayed there in along time maybe its changed but I was not a fan.
good luck
Itasca Meridian SE 36g
Road Master Tow Dolly