That would be too high, would start to twist the shoulder/wrist badly while in 1/2 position(first fret on an EB). Maybe nut between mouth and nose tip. I have a long face and neck.Always figured you were taller than me, I'm 6'1". But my recollection from 1 year of DB is the nut should be at your eyebrow?
(nuts, extended endpins: this sounds bad)