Josef Kammhuber's Do217J-2.Questions on markings...

[atckyrre]

Ayup,

I am in the process of building Josef Kammhuber's hack while Befehlshaber Luftflotte 5, a Dornier Do217J-2. My build is based on this one picture scanned from "Luftwaffe in Finland", but I believe it has been publicized in several sources.



This is how far I've come:



My model will be depicted about mid '44 and so far I've found out the markings were N9+AA of KurierStaffel Norwegen. I am of the understanding that since this was an autonomous unit the markings were all black. And it also seems other aircraft of the unit were marked with smaller "N9" lettering.
My questions are regarding the rest of the markings. Since this was in the "early late war era" I am a bit confused about the practises. I'm inclined to think that there should be black outline crosses on the wings, large black-and-white underwing crosses, perhaps with black outline, under the wings and black-and-white cross with no outline on the fuselage. Swastika? All black?
Or should all markings be black outline only?