Will these be on the case? Didn't see mention of that.
Personally, have the same motherboard, most likely hotter gpu (tahiti le) and atx midi case with 3 12mm fans in push pull configuration and it doesn't seem to gather that much heat running couple days straight as a miner. But each time I hit the miner, I'm cranking the case blades on full throttle. And those are pretty capable fans. So gotta take care of general cooling, or things might get cooked on longer run.
I plan to use a table fan. But will the direction of the wind blow towards the GPU does the GPU's fan a bad thing? I'm not sure if the GPU fan is fanning clockwise or vice versa.