This will work surprisingly well. I have data on the D14 with this orientation. I have to do more testing to publish, but this will work. Compare your temps vs traditional fan setup.
5.25" bay fan is pwm and controlled by CPU temp, as is the 120mm exhaust behind the silver arrow.
been really happy with temps... an hour of prime @ 5ghz on air... less than 80C with ambient around 78?