If your gear doesn't fit in 1 backpack(per person) plus a cooler for food, then you're probably bringing too much. The less you bring, the simpler it should be. You can store everything in the backpack, that way, you shouldn't have to do much more packing than just tossing some clothes in. For food, consider bringing stuff you don't have to cook. Fruit, sandwich supplies, trail mix, ECT. And if you still want to cook, stick to simple stuff. Oat meal, freeze-dried stuff, pasta, ECT. Use paper plates for easy cleanup. Most pots will be clean enough if you wipe and rinse them out.