To get a more food for a lot less cost get 50 pound sacks of dried pinto beans, 50 pound sacks of rice and the biggest containers of vegetable oil or lard you can find. I know Sam's club has all that. Lard and vegetable oil and provide more calories for less cost them anything else.

For storage put the dried beans and rice into mylar bags inside of 5 gallons buckets with oxygen absorbers and diatomaceous earth to kill any insects then seal the mylar bags with a clothes iron. The dried beans and rice will cook a lot faster if you run them through a hand cranked grinder and soak them in water for for a day before you cook them.

Be careful who you have in your survival group most non-Christians would resort to cannibalism before starving to death.

http://www.infowars.com/would-you-become-a-cannibal-in-a-collapse