That is a really nice kit. Like bigreddog said, I'd be happy to have that kit.

The only recommendations I can think of are:

You might want some repair tools and materials to fix a broken pack or other items in your kit. A sail needle or upholstery needle and some strong thread would be a good start. Maybe an assortment of zip ties for broken straps. For clothing repairs, you could also add a small sewing kit like they give out at hotels - about the size of a matchbook.

For your EDC, you don't have anything for water. I'd suggest an oven bag or a small pouch like this one: http://www.bepreparedtosurvive.com/1%20Qt.%20Emergency%20Water%20Bag.htm Or you could just carry a condom for water carry.

You also have two bic lighters and some matches but I don't see any other fire making tools. I'd add at least a ferrocium rod and maybe a fresnel lens too in case you get hopelessly wet.

I'd add a small whistle since an air horn is only good for a short time.

I'd add a pair of leather work gloves unless you're used to working with your hands all day.

I'd add a second compass, even if it's just a button compass or zipper pull compass. You need a backup because compasses get lost due to them being out of your pack and getting used often. Also, when you are in the depths of being lost, human nature says you will absolutely doubt the integrity of your compass. A backup compass to compare the two could be the little something to bring you back to reality.

I'd add extra batteries for all the lighting devices.

Some foil would come in handy as a windscreen for your stove or to wrap up any food you find.

With a pack as big as yours (55L) I imagine you still have lots of space in there. Since we're talking about a Fall weather load-out, I'd beef up the shelter a bit. Maybe add an Exped downmat or some cheaper pad if you are trying to keep costs down. You could also upgrade to the AMK thermal bivy bags instead of just heatsheets.

If you will be with your son stuck in the woods, perhaps something to pass the time like a deck of cards or dice or a mini backgammon set or a little AM/FM radio.

You don't have anything for food gathering like fishing kit or snare kit. Perhaps they are inappropriate for your area, but food gathering equipment might be something to add.

Since this is also your get home bag, I don't see anything for self-defense. I'd start with a firearm or at least have an ASP baton, or a monkey fist ball bearing key chain, or some pepper spray, or a street legal knife like a Boker Subcom, neck knife, or even a retractable box cutter razor.

Overall a very nice kit you have. I like that you're carrying a lot of stuff on your person, that's something that I learned only recently from this website.