I would highly recommend Kansas for Rio hunting. Most zones have a bag limit of two as well as WIHA land which is private land open to the public. This KDWPT has maps of the WIHA land via GPS and Google earth. They also have numerous state parks that have cabins you can rent.
If you want any help in KS send me a pm. I have only hunted their once but it was awesome.
"Strength does not come from physical capacity. It comes from an indomitable will." --Mahatma Gandhi
"Never confuse a single defeat with a final defeat."--F. Scott Fitzgerald, American writer