Seems perfectly fine, that is without being able to see it...
Read up on negative air pressure as this is the key to controlling the odors & air circulation. Having one fan up top (best positioning btw as hot air tends to rise) sucking the air out through a carbon filter (real can style filter, not the cheap coco-carbon screens that really don't work for tough jobs) is ideal. No intake fans, let a larger exhaust fan do all the work. Vent holes in the bottom allow for air to be drawn in (cooler air from down below). May need to tie in a timer & manually dial it in to relative humidity & CO2 injection if used. Now you could get into $600-1200+ controller units...
Eventually, you will want to get into a CAE (controlled air environment), or at least a partial-CAE, as true CAE is very difficult to maintain. This is all dependent on negative air pressure/flows. Just some thoughts as you appear to be exploring the issue...
Also, the oscillating fan directly blowing on the plants is a very, very good idea. Keep it on 24/7. Also, watch your relative humidities... bloom it at 40-50%... 60%+ gets you into big trouble. Watch the RH (especially) during the first hour after lights go off- temps drop & RH shoots up. A few nights of this & bud rot may take hold. Best.