I hunt in Eastern Washington. I want to plant 6 acres above a deep draw with heavy elk and deer traffic. I won't be able to plant until this spring

Any tips on what to plant for both elk and deer (we have mulies and whitetail) for this area? The location is on my Dad's dryland wheat farm and there is no irrigation. Spring is somewhat wet, but the summer is typically warm-to-hot and dry. I hunt in September (mostly) for elk (in the rut) and deer, but this year I'll be there during the Thanksgiving holiday for bucks in the rut and elk as well. So....I'm looking towards next year as my first hunt with a food plot.
Any suggestions would be appreciated.
Thanks!