I have loosely organized kit.. Currently have 60 gallons of drinking water, enough food to survive 3 months and firearms and ammo. I have bug out bags with essentials and a robust first aid kit and redundant medications.
I also have spare clothes/ blankets/ trash bags/ duct tape/ gloves etc.
When we had a blackout, we were able to quickly get our lighting and security in place and dinner and the entire ordeal was a non event. The only thing I really want is a generator, fuel and a few more propane tanks.
Food wise, I know 3 months isnt a lot, but I think if the shtf, I would assemble with a group of people and acquire food.
I also have a small library of emergency and survival technique books so that should help.