It looks like a good idea, I was toying with installing my trans cooler the same way, but
Iīd say you need that airdam, as I understood it, it causes a vacuum behind it and causes air to be sucked up through the radiator.
I made mine as deep as possible.
You could still mount those coolers in front of the rad/intercooler, as they are they block the upward flow of air, which in your case would be minimal sans airdam.
I was wondering how much does go into the front of the car, I just have the two openings.
Do you have a temp gauges for your oil and trans ?
This is how I have mine setup.
airflow would go downward through those coolers only if you put an airdamn at the leading edge of the bumper so no air can get under it...
Like this maybe
could be very impracticle for the street.
Why donīt you try it airdam on - airdam off, you wonīt know until you run the car ?