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.
Sounds like you have prepared well !
Good on ya !