Welcome to duck hunting chat.
I don't know of any leases in the Tenkiller area, but are you sure there are ducks/habitat at Tenkiller? That is more of a deep, clear, and rocky lake i don't think there would be ducks there. Its good for fishing, but not for ducks unless you mean the river below the dam. But a little bit to the south or west there are many places to hunt. Fort Gibson, Webbers Falls, Chouteau, the Lower Illinois River, Kerr Lake, and Sequoyah NWR are good areas about 2 hrs from you. I think Texoma is about the same or closer than the areas above and it is usually just as good as them. If you have a boat that would be an advantage you are able to get access to much more places than without one.