What do I need for living off the grid for 5 days?

I will be living off the grid for five days, in the mountains with no electricity. I will have a bed, a roof, dishes, utensils, and a propane-fueled stove. There is also an outhouse. I will be by myself.

It's 5000 feet up in California so I figure it may be 40 degrees at night, 55-60 during daytime.

Kinda scary being out there in the wilderness all alone without cell phone reception, but it's also kinda fun. Hopefully I don't get bitten by a snake.

What do I need to bring? I have not done too much camping since I was 12 so I forgot what goes into the checklist.

Basics
- Extra propane
- 2 flashlights / extra batteries
- 1 gallon of water per day
- Phone / external battery charger in case of emergency
- Pocket knife
- Axe?
- Bug spray
- Sleeping bag / Blanket
- Pillow
- Garbage bags
- Compass
- Lighters
- Lantern
- Binoculars
- Tape
- Sanitary wipes / hand sanitizer
- First aid

Food
- Canned goods (lots)
- Cereal/oatmeal
- Fruit
- Veggies

Now, I have no idea how long a cooler/ice can last out there. Do I bring meat, and if so, how can I keep it from spoiling and for how long using a cooler? Otherwise I'm thinking of bringing a protein shake to get protein if there is no meat/dairy for 5 days.

Clothes
- Usual stuff
- Warmer jacket
- Hiking shoes
- Hat
- Poncho

Random
- Camera
- Notebook
- Books

Anything obvious I'm missing? Thanks.

I will be in a cabin/lookout that used to be utilized by rangers for spotting forest fires. I don't know which one yet, but this is the one I am leaning towards: What is bear spray? For a long time now I've wanted a vacation to just get away from the city. My trips tend to be solo adventure trips (last minute, no plan, just a plane ticket and some wanderlust). But they are usually in places full of people...cities, random third world countries, etc. I've wanted to just be somewhere quiet for a while. Get away from the online dating, the work, my phone, SF, etc. Once I was hiking up on Mt. Aso, a volcano in Japan, and I drifted away from the tourists and maybe a half mile down a ravine. All I could hear was wind, and the landscape was clear of anything but rocks and shrubbery. I knelt down to the ground, below the wind, and I tried to listen for something. There was nothing but true, pure silence. And it was beautiful. I want silence for more than a moment, so I am doing this trip. I've also wanted to pick up meditation again - I haven't done it consistently for a couple of years. At first I considered a meditation retreat, but I decided the last thing I needed was being surrounded by 50 new-age vegetarian fags and soccer moms doing the trendy thing. I know how to meditate, I just need somewhere to do it. I also want to regain some of my focus/perspective. It will just be me, my mind, nature, a book, and a notepad. Just reading, writing, hiking, and meditating for five days. To some this sounds like the worst vacation ever, to me it is heaven.