Hello Rowan, first of all I hope you are in the rudest of rude health sir?
A question: from the profiles it appears that you may be opting for an olive/brown wing colouring - I remember the declaration on the Aerodrome forum by DSA regarding the use of streaked coloured stain which differed for top and under surface of the wing and wondered which you favour? I personally, with respect to those who put the debate forward, find it difficult when folk, well intended and studious as they may be, make what are clearly intended as definitive pronouncements on WWI colour schemes. Unless we KNOW what colours are, it's all guesswork, with a varying degree of education. I sort of opt for blissful ignorance...
Yours, as ever