All of this can fit into a small duffel bag with your footwear inside of it. It's as you wish, however consider that if you place your footwear beside your kit there may be broken glass in your footwear after an earthquake, SO BE CAREFUL or perhaps you'll forget to check and place your foot in a boot with glass in it!
Add whatever else you feel would be good for you. And every member who is old enough should have their own kit as well and know how to use it. The family can practice this as a part of your preparedness plans.
Remember that no matter the scenario, wilderness survival, urban/suburban survival, coastal survival, ocean survival etc., you MUST understand the Elements of Survival to a 'T' so to speak. It is a method of thinking and doing things which includes preparing before an emergency, knowing what to do during an emergency to even getting things back to normal after an emergency, in dealing with the fallout or the effects of whatever has occurred.