The way I was going to do it was to run the 8 pcie to straight 6pin pcie with adapter from eBay and for the other terminal a dual sata to 6pcie also from eBay, this way your not putting too much current by spitting the 6pcie as you suggested and the sata and 8pins are on different locations in the psu thus less chance off overload
Interesting, so you will be using three types of output cords:PCIe, 8pin and sata, then use 8pin to pcie and sata to pcie adapters.
Unless someone tells me that 8pin cannot be split into two PCIe connectors, each carrying just 87.5W for a total wattage going through 8-pin of 195W, I'll probably use this.