Bag Weight!
Indeed!!
So, you have more than one to meet the requirements of the situation.
1) is the house gear. Sometimes it is better to stayput and wait it out....
2) the on person gear...handgun, ammo, blade, multitool, cash, ID, maps.
3) the car bag...the stuff in the car that is not a portable but nice to have
4) the personal ruck and or tac-vest...one per menber of the family. Keep these light with the required gear only. And not everything has to be redundant. Each person shoulds have IDs, copies of important papers, some cash(for emergency) addresses/phone of contacts, socks, undies, basic survival gear(flashlight, batteries, bulb, swiss army knife or multi-tool, bic lighter, some first aid gear), some water, a MRE and a person defensive weapon of some nature(OC or even a reliable .22 beats nothing and 500 rds of 22 is small and light...good for the younger members).
Somewhere in the foot (or bike) mobile group needs to be a sewing kit, para cord, ever handy duct tape, a 12 inch machete and e-tool.
A Water filter is great...even the straws.....but should have iodine too.
Do not forget spare glasses, personal medication, and feminine products!
Personal communications gear(small and light) with spare batteries might be a good idea for families with kids or small groups.
A poncho and poncho liner is a most handy bug out accessory with many uses.
Gotta a dog? get the saddlebag packs so it can help out too! At least with its own food. Don't wannt make it the ammo bearer, it is your own defensive system, so keep its load light.
Like defense....bugging out should be a layered event....stay put, then the car(or motor cycles or even mountain bikes are great for urban E&E), then foot, if the car breaks down. You have to take in account the physical shape of each individual of the family for the 'last ditch' foot load.
Weapons are personal thing's...but a handgun each and a rifle or two is very nice thing. Ammo compatability also is good.
I have several 1911's....one is for me, one frame is on a Mechtech CCU as my psuedo rifle(it is how you use it, will get something else as funds allow), and then I have a couple extra 1911's to any other's with me that I trust...and some 185 Silvertips(lightest kicking .45 round that I have found), for the semi trained. Would take 100 extra rounds and all my mags preloaded. My airweight snubby for the pocket.
Hope we never need it...but one never knows. A black out, a brush fire, terrorist event, viral infection, riot....can all cause a shift from the day to day stuff to a challenging time where the prepared are rewarded for their caution. And we have experience each of these things in the world in the last three years!
Jercamp45