The Schilling prints are the best representations that we have for type and color. When I read the Standard description this is the color and type that I see.
The main points that always stick out to me is . . .They are not birds known for length. They are instead wide birds, with depth. Their capacity comes from their width and depth. The bird in the print has a good strong frame, set on strong legs. A prominent breast, deep keel, and good width. It is not a bird with a lot of length.
NHs were known for their rate of maturity, early fleshing, and speed of feathering. Birds with long and tall frames, generally take more time to fill out. The NH reputation is grounded in the breed's type, and size. The Standard weight acts as an anchor of sorts.
Would you suggest mixing the German and the Regular together?