So, managed to get things stable at stock speeds, proceeded to overclocking. Currently running Prime at 4.0 GHz (200 Bclk) and 1.25v. Max temps seem to be around 70 degrees. Once the Sugo case comes in I'll work on dropping the voltage until temps are in line with what I want. Probably looking at 3.6-3.8 GHz in the smaller case with a Zalman 8700. Very impressed with the D0 cpu, on water I'm confident it would hit 4.5 without hesitation.
The GPU's are also running well, at 950 MHz each and 1050 memory. I'll work on moving these up once the processor is stable.