I've changed my plans a bit. Rather than starting from 2 MAC boxes, the second one will be from Roden. The reason is the Roden kit has more precise details, some of which will be duplicated for the MAC kits. So here are the 2 'boxarts':

Here are time pix of the 3 machines. From top: Stark's D-III, Böhning's late D-IIIa and von der Marwitz's early D-IIIa. The latters will differ by some details like the shape of the strut ends and the prop. Also note that Böhning's machine has a telescopic sight which is better depicted on the close-up below.

A sight on the accessories I'll use. On top a box of Orion figures, and below from left to right: Eduard PE Spandaus and seatbelts, LF Models prop logos, an FCM sheet that includes a lot of gauges, and 5-color Pegasus and W&W lozenges.

As for the Alby, the upperwing lozenges will be home-made. They're slightly lighter than the previous ones I've made and get closer to Aviattic's:

About the rib tapes, a close-up of Böhning's machine shows variations in the tape's color, indicating lozenge-made ones.

In order to spare lozenge decal, I've prepared a small sheet for printing on clear decal, which includes lower and upper tapes, as well as stencils, crosses for Stark's machine and Pfalz logos:

I've made a quick 3D scene using simple Albatros models, that is intended to check the dispatching of models on the planned diorama (sorry this time, captions are in French):

At last, I've started moulding spare parts. Here's a bunch of them, straight out of the moulds. The engine in the lower left was made from Milliput epoxy putty which makes more rigid and bubble-less parts. In the center, a portion of copper spring that will be chopped into valve-springs:
