Ventilation setup

From my experience, likely you won't have enough ventilation to keep the tent within a good temp range using just those fans and passive ventilation. I have a tent similarly sized and have a single 6" fan inside the tent. I opened all of the ports and turned the light on. After a fairly short period of time the temps in the tent reached >90 degree F. The average air temp in my house is around 69-73 degree F. I also have a 450W LED light. Most likely you'll need at least an exhaust fan to vent the heat out to keep your temps at a reasonable level. But maybe not. Test it out and see if you can keep the temps down with the lights on with those fans and passive ventilation. I now have a variable speed exhaust fan (outside the tent) pulling through a 6" carbon filter that sits in side the tent. Since the tent is small, I have turned the fan down to the lowest possible speed because even at that speed I am able to achieve negative air pressure inside the tent. Negative air pressure in sidethe tent means that no air will be escaping through the holes and passive vents. All of the holes are now air intakes only and do not need to really be covered. This also means no smell leaking through those.