Hmmm.
Putting a pusher in front of two pullers doesn't net you any additional airflow. In fact, too MUCH airflow (velocity) is actually detrimental, same as not having a thermostat. The air needs to absorb the heat as it passes through the fins and carry it away.
Also, all those fans put load on the alt, which adds drag, which pulls HP, which creates heat, which defeats the purpose.
An external oil cooler won't need a fan unless you're pushing some ridiculous oil temps.
Cool engineering exercise, but if it made sense from a performance standpoint, it would have already been common.
Ideal setup is:
A couple s-bladed fans that cover most of the surface area of the radiator and are properly shrouded (as well as properly shrouding / funneling the opening to airflow from the front of the car), with a Derale temp-sensitive controller (they also make a 2-stage that will turn one fan on at one temp, and kick the other on at a higher temp, great for cars with A/C)... Add an oil cooler (I used an FD unit) mounted someplace with moderate airflow (mine was behind a foglight opening on one car, and mounted below the radiator on another car).
