Thanks for allowing me to drive the AW at MTC. Such a great little car to drive. Quite different from the SW20.
If you fabricate a duct from your air intake to the oil cooler so air will only travel through the cooler and no where else, you should not have any issues. I did this to my car which worked well.
Maybe you could add some ducting to the underside of the car to improve airflow into the engine bay. also improving airflow out of the engine bay will also help.