Thank you!
Well, sanding was "a long moment of solitude" as we say in French...
I have also studied following steps. Eduard lozenge decals are not accurate, I will develop that problem later.
And for what concerns rigging, I will not use photoetched parts Eduard proposes: look nice, but too tiny to manipulate during the rigging phase, andit's PE then it's... no volume.
i will work as I was working when I builded WWI fighters some times ago; so I've drilled holes in the lower wing.