Many thanks guys. =]
@Juraj_Talcik, Nekrobul
Yea in its current state the rendering would be too expensive for a decently long/short animation. However it's true as Nekro says that it could be optimized; for one the albedo isn't optimized (I noticed a bit late & just decided to wait out the renders since I plan on doing a part 2). In particular, I noticed red blotches in the albedo pass for most of the white marble in the scene. Apart from that there may be other optimizations including single-bouncing the fog volume or taking a less costly approach. Either way I planned on a possible short (lower res) animation for the middle ring-console spinning --- as it does in the game.
For hardware, I rendered with a single 3930k