I have some great air flow already with that clip on fan going over the canopy, the standing fan on the right blowing under the canopy, and the intake ducting under the canopy pointing up towards my carbon scrubber. The intake is powered by an inline fan and creates some nice movement.
I would do it for yield, but I'm not too worried about mold at the moment (unless you think I should be). My humidity, temp and air flow is on point for such a small tent. 45% on the dot, temps 65/74 night/day. Got a humidifier, dehumidifier and space heater in that room. Plus it's winter where I am. 20-40 degrees during the day with low humidity.