Direct the 212 Evo's airflow towards the rear exhaust with the fan that came with it. (mount the fan to push the air through the radiator towards the rear)
If you have a fractal design define R4, then use two fans in the front intake, and one as a rear exhaust.
So far I count four fans, but if you have an extra one, you won't require an extra fan on the 212 Evo, instead use it on the bottom as an intake (beside the PSU).