I put it together before receiving the RX480 and the CPU ran a tad warm in the high 60s. With the GPU now in cooling is not an issue on the cpu, it never seems to do enough work to get over the 50 mark even with all of Civ5's inefficiencies. Airflow in the gpu compartment is less than ideal. I went with a reference blower style card because of case config and reading around, not sure how much of a difference it has made though. May sell my 480 when the 1060 comes out.
Overall cable management was easier than people had said it would be, and the overall difficulty putting it together was playing civ5 on prince.
A Few benchmarks if people are interested: http://imgur.com/a/8IQtP