What is your time frame? Are you trying to survive until friday or next month?
You can sprout kidney beans, just don't eat them raw, google will find you some recipes. Millet, quinoa, brown rice; It could be worse. Soak them before you eat them. And add something fatty with them.
I would think it better to use some of the non-primal stuff to round out a mostly primal meal, than it would be to eat all the primal stuff and then subsist off of non-primal stuff. But I don't really know.
It's grandma, but you can call me sir.