1. Quick and easy cheap food like: canned ravioli, ramen noodles, breakfast bars, peanut butter, crackers, tuna, (water purification tablets)
This, but screw cans, way too heavy and takes up too much space. MREs shine because they don't take up too much space, and the plastic containers are lighter and more packable than cans. They also come hydrated, meaning that you don't have to dip into your drinking water to cook them.
2. 22LR of your choice, CCI Mini Mag ammo (300 rounds) I like the Henry Survival rifle
If you're going to bring a gun, why not pack a Glock, so you could better defend your family if you have to? I've been in a number of traffic jams, snowstorms, medical emergencies, road rage incident, etc. and never felt the need to start poaching critters to feed myself. I have, however, been glad to have a fighting pistol nearby
Edited to Add:
Not meaning to pop anybody's fun balloons, but I would think that you are way more likely to have to defend yourself from others, than you are to live off the land wandering the countryside so long that you'd need to resort to feeding your kids the squirrels and bunnies you shot along the way.
3. Simple but effective first aid kit
4. duffle bag of clothes (3 changes) 1 towel for each person
5. essentials: bug spray, sunscreen, toothpaste, deoderant, soap, etc.
6. Tent large enough for the family with blankets or sleeping bags
7. Kit with important documents: license, passport, money, cards, etc.
8. Bible to teach the family how to live
That all makes sense. I would recommend small and light, I mean SMALL
, backpacks for you and your wife and any child big enough to wear one, with critical and basic gear that you couldn't do without for a short period of time (first aid, shelter (poncho), fire making stuff, wool hat, gloves, sweater, etc.) and have everything else in the duffel bags.
Don't forget the toilet paper, wet wipes, etc. Also, a small shovel, a tarp, cord, and an axe can work wonders when you need to spend an unscheduled night or two in the woods. It sucks to be confined to the tent by mosquitos, weather, and whatnot, the ability to clear a spot and set up the tarp outside the tent is invaluble. The tarp, shovel and stuff is in the duffel bags of course, because you wouldn't die without it.