Looks like MCI-DEN is very commutable. 7 flights a day (2 on Skywest, 5 on United), 2 CRJ-700's, 3 737's, 2 757's. The 757's have 24 first class seats (Shoot for those).

I looked at this coming Thurs, Fri, and Sat and those flights were PACKED. But I forgot this week is Spring break. So I looked at the next Thurs, Fri, and Sat (March 30-April 1) and the flights look pretty open (60-80% full). This looks like a sure shot.

If you get stuck, the flights are about once every 2 hours, so it is not that bad. ORD looks like your only feasable connection. But don't worry, once you get MCI-ORD, ORD-DEN is easy with United, AMR, Frontier. United flys 17 flights a day ORD-DEN, and many of them are widebody 767 and 777.

Hope this helps.