Sounds doable, just map the static pressure curve for each fan, set the PWM to a sweet spot of 2000–2500 rpm, keep the noise below 20 dB, and use a 120 mm axial fan with a 3‑way controller to get that subtle draft. Add a heat‑sink on the fan housing to keep the temperature steady, and you’ll get a chill that rattles shutters without blowing the scene away.