If you are going to do the full analysis, you need to also factor in the number of kids going out for wrestling in each of the classes. Tell a kid at Emporia that is wrestling JV that it is easier to get to State in Class 5A. The KCK schools not withstanding, there are 5A and 6A programs that have more kids competing for varsity spots in the wrestling program than there are in the enitre student body at some of the 1A - 3A schools.
If you want to make it more fair, cut back to a large class and a small class. This would be comparable to Missouri's system which has 4 classes with roughly twice as many schools and still give a large number of kids the ability to compete in a State championship.
Also, a one class system may be great if the desire is to create a System where college coaches can be sure that there are no weak Kansas champions. Personally, I prefer a system that allows kids to have as many opportunities as possible and develop them as individuals as well as athletes. I went to WWE Smackdown last week and didn't notice any Kansas kids making a living as professional wrestlers.
