This is a good assortment of easily prepared food for camping or emergencies. That said, this will not feed an adult for one month. If I have done the math right, there are 19,560 total calories which equals 1956 calories per day for 10 days. So, three of these boxes would feed an adult for a month, if that person was doing only light physical activity. Also, the food bags are not re-sealable, so you should add some quart-size food bags to the box.
It’s impossible to carry all the food you will need for a week unless you’re eating very high density proteins like nuts. Nuts and dried meat are two of the easiest off-the-cuff meals. Canned food has a lot of water that is wasted during the cooking process. Stay away from heavily flavored or salted nuts. The amount of salt present in the unsalted nut mixes is still sufficient enough to replace electrolytes.