The wooden support posts are temporary. They're in place now because the footings for the lalycombs were somewhat undermined when the old concrete was removed. The new footings will strengthen the existing lalycomb footings. The wooden support posts won't be needed for the four foot addition, as the metal lalycomb posts are supporting the already existing header for the overhang. We will bury the left metal post inside the new wall. The new front wall will further support the existing header, and we'll take the little bit of sag out of the header when we stick build that wall.
One of the metal lalycombs is hidden from view.