Sorry, I neglected to mention, looks frickin awesome! I have extremely similar plans for a 14' fence for access to my backyard. The gate in place is a piece of sh*t, and will be relocated to be a gate for a backyard dividing fence.
(we will be building a garage in the backyard, and renting the house out, limiting renters to half the backyard, and locked out of the area with the garage. I'll be zeroscaping the renter's half, and have been looking for what I now know is called "decomposed granite
)