Good to know I will order that as well from EK as well as the waterblocks for the Dual AMD Vega cards that I ordered as well. This will be just like what I did with the SR-2 setup. I waterblocked everything... including the motherboard.
I just asked the guys at EKWB if I'm going to need the Double or Triple Terminal Bridge for linking the two AMD Vega cards together. I usually get the Triple Bridge, because I usually have to skip a PCI-E slot, but just want to be sure.
There's a difference between the Aorus 7 and Aorus 9 for PCIE slots. I got confused (I'm nearly 60) but it would pay to check that. I think the Aorus 7 is better for 3 GPU.
Don't know about the Asus.