Charlie,
We just finished a cedar deck with A-C in Rustic Brown, our first time using the stain. Have not yet taken finished pics. Gotta' go to work in a few minutes, but a couple of answers.
What kind of coverage did you get?
On western red cedar, ~ 200 sq. ft. / gal.
Where to purchase it?
Directly from Armstrong-Clark in Calif. Call or order from their website.
Whats the viscosity of the oil?
Just a touch thicker than Ready Seal. A lot more pigment.