A small update.
I have the main wooden frame put together. The curved upper longerons and angled bottom of the frame made for a more challenging build. Still haven't decided how to make the turtle deck and bottom of the fuse yet. They have many longerons and curves in them.

Put together some of the cockpit hardware. Most of this is very simple.
Here is the seat, rudder bar, stick, and aileron mechanism. The S4C had torsion bar operated ailerons, like the Nieuports.

I expect to be painting the wood frame soon. I'll forego the wood graining here, as it would be very hard to see in this scale anyway (and I won't have to wait for oil paint to dry).