I would say not dark enough.
Black prime (I am used to that).
Do like a heavy zenithal highlight of like a burnt umber (dark brown, "Mournfang Brown").
It will make a nice backing to give the lighter tone top layers some "depth" especially if you water it down to get a smooth finish.
Then I think you are "on the money" with that cream/tan colour they have which is "Ushabti Bone".
I would be very tempted to run plain old pencil lead along the edges for the paint chip/wear since it has a dark grey look.
Hope it works out ok for you!