Ouch. No wheat for you.
What do you think the shelf life for the EAS protein shakes is? Having some specialized products in case one develops an allergy to wheat would be useful. Some people can handle some whole wheat, but not the full amount.
Rice, potatoes, and beans are probably a lower cost alternative, but if are are actually consuming the food, then its not so much cost as it is a buffer.
I still need to wash and refill my 55 gallon plastic water drums. In San Diego I had no fallback aside from municipal water. I leave 2 miles from a small river now and about 20 miles from the Snake river. I have purification materials if that becomes necessary.