My whirlwind trip to the Black Hills
http://www.rvforum.net/SMF_forum/index.php/topic,110023.0.html
Took me four days from south of Atlanta and that was with a stop in Mitchell SD to see the corn palace and a drive thru the Badlands NP.
I plan 500 miles a day, gives me time for fuel stops and food breaks and time to stop and set up before dark. At Kansas City, from 70 west take 435 north and around till it connects back with 29. Not the traffic you encounter if you go into town to pick up 29. I-29 north is a very pleasant ride, smooth and flat and a couple of hours of that and the drone of the diesel will be some of the easiest driving of the whole trip.
I have never gone thru St. Louis, I always cross Illinois way south of there, the roads are excellent, and its not far from one side to the other, and I end up at either Chester or Cape Giardeau, and then up 55 and skirt the west side of St Louis. Very scenic and no miles wasted, just a nice ride.
I stayed at Ft Thompson (Chamberlain SD) on the Missouri River(Left Tailrace Campground COE), it is set up the same way as the COE CG at Pierre with the campground in the middle of the river behind the dam. Hugely scenic.
You trip is way too ambitious for two weeks. You won't enjoy any of it, and will not have seen anything. You need four or five days in the Black Hills to see and do, and that will be just the highlights.
Charles
2007 Winnebago View 523H on a 2006 Dodge (Daimler-Chrysler aka Mercedes) Sprinter 3500 chassis (T1N). Bought Sept 2015 with 18K miles on it, Prog Ind HW30C, Prog Dymanics PD4645, Coleman Chill Grille, PML/Yourcovers.com deep alum trans pan, AutoMeter 8558 trans temp gauge, Roadmaster sway bar, Koni Red shocks (front & rear), Fantastic Ultra Breeze hood, added OEM parabolic mirrors and RH aspherical mirror, MB grill conversion.