Hello, I too was going to use that paint scheme, but have now been forced to strike out alone into uncharted painting territory.
However, I did record stage 1 if it is any help to you and others.
Armour - Basecoat Necron Abyss
Flayed Skin - Basecoat Tallarn Flesh
Bodysuit - Basecoat Choas Black
Rifle casing - Basecoat Chaos Black
Rifle detail - Basecoat Tin Bitz
Metal - Basecoat Boltgun
Green Detail - Basecoat Dark Angels Green
Bone - Basecoat Scorched Brown
From my own experimentation the armour highlights seem to be Regal followed by Enchanted with an Ice Blue highlight.
Rifle casing highlighted with codex grey
And Green Detail which i'm working on tonight might be snot followed by scorpion.