Good input. Thanks for breaking down the Life Saving First Aid section. I might slightly change it to:

1. Immediate Life-saving First Aid
1A. Restore/Maintain ABC (airway, breathing, circulation)'s
1B. Stop Bleeding
1C. Treat For Shock

2. Regulate body temperature (except for issues in category #1, above)

3. Rescue Signals

4. Subsistence Needs
4A. Water
4B. Food

The 1A, B, and C above are typically for trauma or bodily failure (e.g. heart attack). For hypothermia, anaphlyactic shock (e.g. bee sting), drowning, and other immediate life threatening issues, the "A, B, C's" will be a little different, but you've definitely got the right idea.

I really like the "regulate body teperature" concept. It applies to all conditions.
Examples
Hot weather: regulate body temp means shade or other techniques to deal with heat and solar exposure
Mild weather: may mean do nothing more than wear the clothes on your back to regulate heat/cold.
Wet weather: stay dry
Cold weather: Stay warm

Thanks for the concept.