I've hunted that area and it is loaded with birds. They will be Eastern's or a few hybrids in that area, depending on how far west you are. I never hunted with the mentioned outfitter, but wouldn't be concerned if his references check out. My advise hunting the SE part of KS would be to go earlier in the season, I'd want to go before May. Should be a fun hunt and if your looking for Rio's start west of 135.