Given that Calif Dept of Wildlife has managed to completely decimate the herds of blacktail in a very short time...I'd say venison is not on the menu for long. I'm thinking corn, beans and taters with an occasional rodent. I have eaten a lot of crow in my lifetime...you get used to it.
Corn, beans, and squash fed a whole lot of folks in rural Native America. Not sure it would work again though, given the amount of folks around today.
Rodents, well sort of, in the form of rabbits and squirrels would be an added benefit.
The odd coyote, or a domestic dog or three, would sweeten the soup pot some.
I've got ipos growing right on my property, of course I have to make sure I don't mis-identify them as there are other roots around that will kill a fella.