My cousin lives with her husband and baby and lab in a yurt up in the cascades. In 2008 they installed a room for septic system, so they didn't have to use the outhouse.

They live 7 miles from a trail head so in the winter they park their car there and use a snow mobile to and from. Even with the baby.

So I see what your trying to do.

I agree with supplies on hand to repair your house in case of damage from tree fall or too much snow on the roof. And in case you have plumbing issues.

I would have several cords of wood available, not just 2 or 3. When i lived in the PNW we had at least 9 cords to get through our winter and that was in a fairly suburban area. And our wood stove had a flat top so we could heat food and water. Multi-purpose to just heating the house.

Do you have a grey water system? It sounds like you may be able to have a food garden where your at. At least for some types of vegetables.

Is your new 2,000 gallon water system going to be brought in or will you have some sort of catchment system for snow and rain?

One thing I looked at and still might do is self generator using a bike trainer. A basic set up, minus bike, costs around $800. However it would charge up enough energy before or during an outage to power any immediate need item (coffee pot, microwave, laptop, etc) for dozens of uses. Based on how many batteries you purchased to hold your charge, you could run a small frig or ice box continuously on just an hour of effort a day. If you used a mountain bike it would be duel purpose for fitness and travel when not creating power.

I have to tell you, I am a bit envious. The problem your describing is one I'd like to have some day.