A wall and a half came up. Great heightened joy!
The first growth fir from the barn is delicious to frame with, and it's face will be left exposed on the inside. The north wall now stands 10' from the base of the sill plate with room inside for 3' of storage beneath the workshop. The tippy top of the roof will (as per DMV regulations) be just under 13'6" from the ground.
(the 2"x6" coming through the center is a temporary mast for the tarp, though it's hardly the rain protection I'd envisioned)