Well this has been a testing week...

I got the wiring kit... this was a mistake.

Neither gold rush board showed up as a USB device when connected via the USB header. It took me until today to figure out (after ordering some micro-usb cables on a whim) that in fact the boards only seem to respond on the Micro USB port.

One board is clocked and running nicely at 887mhz, not sure on exact hashrate yet, but I believe it should be around the 670gh/s mark. Clocking above 887mhz causes problems, although I'm relatively confident on the thermal setup I've got running.
The second board I ran out of thermal paste so I've got it clocked at 300mhz until I get some more.