Sooner, that decription fits a lot of NE Oklahoma. Think about the native species that do well...big blue stem, little blue, side oats...the forbs that do well are harder to know...

Id suggest you call the manager of the Nature Conservancy ranch just north of Pawhuska. They could help. Recognize if you till at all, you will create a perfect environment for Musk Thistle and sericia lespedeza to invade. Both are highly invasive noxious weeds.

Look into korean lespedeza, ladino clover, and brassicas.