Nice model. Interesting addition to the Nie collection.
Exactly my thoughts! Top!
I've only ever seen it on plans or the few pictures extant: in 3D we see what a curious beast it was. Must have been a nightmare trying to climb into that cockpit.
I think, not much different to the biplane. The middle wing is far away in the front, and the top wing is, also due to the cut out, mostly after the cockpit.
I find the cut out on the rear edge of the upper wing somehow interesting. It is mole or less useless in
this configuration and is a sign, the there was a different layout before.
I
must build this bird too!
Cheers,
Frank