Hi, If that flat backed mountain in your southern view is the one I think it is, we're in the same neighborhood. Not far from Diamond Lake??
I started out in Camden about 30 years ago in a 16'X24' tool shed, on a piece of land with the same basic orientation as yours. Back then, when I mentioned Permaculture, people thought I was talking about hair salons, and the only book I had ever seen was from Austrailia.
P.O. County is much friendlier to owner-builders than Spokane, but less so than it was when I started out. Back then they had a policy of "If you can draw it, we'll probably let you build it." It's still a very good area though, with lots of like minded folks.
If you are in the area and interested, I'll invite you to our local garden club in Camden. You'll find a bunch of good people and some of the county's Master Gardeners, with lots of local information.
Good building to you, Tim