I am out in Overland Park, starting out this year too. Now that I have a yard to do it in, time to take the plunge!
Two each of cascade, centennial, nugget (crowns), chinook (crowns); plus a single magnum.
The soil needed some serious work. All clay below 8-12in. Took a lot of compost, digging, and tilling, but I have am hoping for some success this year.