Oh wow, I did not see your reply! Would this be the cooler: http://www.coolermaster.com/cooling/cpu-liquid-cooler/masterliquid-lite-120/ I have a couple more questions, if you could pretty please have time to answer them. I'm planning on using a asetek 550lc, which should be the same 27mm thickness radiator as the cooler master one linked, and did you use a slim noctua 15mm fan?
so I was able to run both PCIe power cables in the gap between the cooler and the GPU so you should have space, even if you have to tuck the power cables behind the GPU instead. best advice I can offer if you are going with the Coolermaster aio is that you need to pay attention to its thickness, it varies somewhat between models. (i used the lite version - the slimmest)