Here's how I list my priorities for a BUG-IN SHTF event,

Water: Collecting, Purifying, Storing

Food: Collecting, Preserving, Storing

Security: Firearm, Ammunition, Maintenance and Repair, Securing the BUG-IN Location

First AID: Kits for just about any emergency I can handle at my skill level

Basics: Clothing for the seasons, inside Solar/Battery run LED lighting at night, Heat for the winter

Secondary comfort items: A few items which reduce stress at extreme low cost.