CPU bottleneck: depends on the games, resolution, and quality settings.
Gaming at 1080P, mostly console ports.
Yup, totally agreed. No way this case will be able to handle that kind of heat. You might have a ghost of a chance if you came up with customized heatblock to the GPU & nicely designed heatpipies w/ good connection to the unused side heatsink... but even then, it'd be iffy.
I'm pretty sure it will work if I directly vent the GPU exhaust out the top.... I'm going to make a plastic adaptor which directs the flow from the cooler so it doesn't end up in the case. There's intake holes pretty close by aswell, I may move the GPU so it fits directly over them. Worse come to worse I should be able to undervolt / clock the GPU. The noise is an issue, but I can turn the GPU off in the bios when its not needed if its really bad. I might hang it from the roof of the case with rubber, see if it helps. I also was thinking of modifying a Accelero Mono PLUS.