RE: !/4 scale WWI kits?
All good points and logical thinking. Knowing you're particular to accuracy of outline Id suggest checking on replicraft drawings to see what's there that you would be interested in. Thier drawings are to 1/5 scale and would have to be redrawn. More my way inclined that a set of drawings designed for a model.
A real challenging approach to creating replica, rather than just a model. I have had one in mind for some time and may attempt in the future.
Doc