You are in luck, there is a riding area in Merwin MO. The area has a motox track(outdoor national style) and woods loops also. There was just a harescramble there yesterday so the markings should still be good the rest of the month. It is all **** width trails no real nasty single track but fun riding and is about 40minutes south of Overland Park. Put a post out when you have riding days nailed down and I'm sure we can round up some of our local KC riding group to ride w/ya.
Lake Perry in Lawrence Kansas is an option as well but it is **** infested most of the time...if you want the ultimate in rocks and such, threre is Chadwick, down near Springfield MO..that would about 3hr drive though. Anyway, hope this helps. Jason