I think the last thing I would do is limit my options to a dozen plants, ten of which are annuals; that just sounds like a recipe for massive fail. I'd shoot for a much greater variety with a variety of growth habits and the widest (earliest to latest) harvest window. In addition, I would familiarize myself with all the food options locally available to an experienced forager. I'm going to want to eat, not wait for stuff to mature. I'd also lean heavily into perennials because in a SHTF scenario there may be no time to do all the things necessary to nurse a bunch of annual plants to maturity.
That's one of the rationales behind permaculture, anyway.
