So true. We live in a log cabin, and realize how much wood goes into it. If we were die hard, we'd go that route, but I'm happy using less wood with better insulation and making it an easier build.

Thanks for the advice. I think we're leaning to using deck blocks (precast concrete piers) on a gravel filled hole. Less digging and NO mixing. I found 9'x7"x9" fresh cut oak railways ties for girders. I think this will be the easiest, cheapest and best option. Get the whole building a fort or so off the ground.

Ooo, a waterfall filled pool sounds Devine. We may have to make the jaunt down to the creek or sort out some well filled pool.. That. Spot you mentioned sounds amazing! The cold plunge is so crucial.