OK!
I am still slowly completing this. Picked up a gigabyte HD7970 OC with eh 3 fan cooler. Only to panic later on thinking it might not be an exact reference design.
But from looking at the back layout of components it looks like it is, so It will be easy to get a block for.
I hate the blue LEDs on the side for HDD and Power. I have unplugged them for now, they are just to bright. I ordered some white frosted LEDs to replace them. Pictures will come up when they come in.
I am at the stage where I'm looking at water cooling parts/kits. I am thinking a two radiator setup. one at the front (200mm) and a 240mm at the top. I made a sketch, but It probably isn't exactly accurate as finding exact dimensions of end tanks and barb locations isn't easy.