A good though Rog. My guess (yes, guess) is that a couple of those fans (scavenged from an old desktop PC?) might be needed to give sufficient airflow. Back pressure from the louvres near the windscreen might be a problem with insufficient fan piwer.
As another off the wall thought....
Is it pissible to reverse the heater fan to suck air instead of blow?would a polarity swop of the piwer work?
