I was simply never able to do this right with the previous hardware and software.
Technically, I completely redid Riva's skin and makeup again to properly take advantage of the new machine and software. I started with the Base Camilla Skin used the new skin tone features in CC4 and exported. The base map was modified in GIMP. Then, I replaced several Bump maps to get everything I wanted and worked on it some more in Skin Gen. Her sub-surface scattering needed to be tweaked as well. Everything is in 4k resolution.
The new facial rigging allows for much more realistic expressions.
I used light studio and the Iray extension to get the lighting just as you see it here.
All told, these shots required nearly 8 gigs of VRAM - and this is with a card that is specifically designed to do ray tracing.