I did something similar last summer. I have Mylar bags, o2 absorbers, and a sealing machine for Mylar.

I assembled meals for 3x a day eating. Each includes condiments and sauces sides in addition to main course. Breakfast is very monotonous (oatmeal with dried fruit). One meal is a freeze dried mountain house main courses plus sides and condiments sealed in Mylar. Other one is very similar but homemade not freeze dried. Either red beans and rice, Mac/noodles/Vienna sausages, tuna noodles.

I have 4 days of these rations in both adult BoBs, and 3 in kids ones. Darn near fills main compartment of Alice medium rucks leaving little room for clothes and the like. Thinking of attaching MOLLE sustainment pouches to sides to clear up some room and make easier to access and use.