Here is something else that you might pause to look at in Goodland. I think it’s kinda nifty anyway. People forget how much Kansas had to do with Air and Space type developments. (FWIW, I listed the Cosmosphere thinking that it wasn’t likely that you’d be traveling through Kansas again anytime soon. You might look into other possible “sidetreks” that might really interest you if this is the case. If you have time/money that is.)
I didn’t notice that the site I linked also lets you look at specific Kansas towns to see what may be of interest to you there. Good luck, there are things of interest in Kansas you’ll find. Get a list of the towns you’ll be going through, or very near, and look them up.