What I did for ventilation is I put one hole behind the box and one long bar shaped one on the door. I then put my timer to have a 15 min "rest time" every 2-4 hours, meaning that the lights shut off temporary and allow the heat to dissipate. This seems to work really well right now and the inside rarely heats up. My plants seem to be loving it I'll post some pics of the new growth!

(Also I have no idea if these are female, I grow them from bag seed lol)