Going July 4th weekend so I can pick up 3 new states (trying to hit all 50, this will bring me to 45). Spending July 4th in Minneapolis then heading to Bismarck-Montana-Devils Tower-Mt. Rushmore/Badlands and back. Any suggestions on things to do in Bismarck, the Badlands as well as where is a good place to stop halfway between Rapid City, SD and Chicago? Rochester maybe? or camping somewhere? Any suggestions are appreciated. Thanks.