Oh one more thing, I'd be very interested in the engine size you've used for your eindecker and what you might deem necessary for such a model.
I intend to fit mine with a .40 OS FS (mostly because this engines left over from a previous model)/
I'm aware that this may result in a bit of underpower syndrome but I'm not sure to what extent.
I read that lots of ppl install a .60 engine or upwards in 1/6th scale ww1 models.
On the other hand I've seen a 2 meter flair taube weighing in at roughly 3,5 kg perform very adequately with a .40 OS FS engine.
Admittedly it didn't behave like a pattern ship and wasn't very capable of unlimited vertical performance, but then again this would be out of character for a delicate ww1 aircraft.
I'm (tentatively) optimistic that my eindecker at 190 cm and a projected 3- 3,5 kg would be about the same.