Look online for 'freeze dried food' Mountain House. There is a guy, Feinee or something that sells it in Denver area, but hes out till August.

You can get samples of this food which will last for up to 20 years. Try before you buy.

Look up mylar bags on Survival forum. Beans and rice are the general staples, cheap, stores for 20 years, downside is long cooking time so you might need a pressure cooker which cuts cooking time by 2/3. Also, try the rice and beans so you know what you are getting. Bland food and lots of gas... Red (Kidney) beans need to be cooked some beans are poisonous if not cooked properly so you need to look that up also. So you need lots of salt or garlic salt, etc. Water storage is tricky, water can go bad in a few months, so you need to look into adding bleach, etc, and marking and rotating.
Nothing is easy. Mountain House is about $4-6 for one, which could be split, but good food is a psychological plus, so the cost could be worth it, even if you only eat one every 3 days or so.

Also, what do you do for bubonic plague?- because I can see alot of squirrels, and other varmint being added to the protein menu, but you need to handle as hazardous materials, so as not to get fleas. That is not well discussed. Rabbits can get it, prairie squirrels,etc.