About the temps - I dont know if youve still got high temps, but try using the smaller fan to SUCK air out of the closet, that way the hotter air will be be sucked OUT and cooler air will be sucked IN. Just a theory, no idea if it will work but it will provide better ventilation. A problem that you might have with this is that as the hotter air is being sucked out (into your room, or outside depending how you set it up) is that your room will smell of MJ even more.
I think youd need to put the fan thats sucking air IN at the bottom, and the fan sucking air OUT at the top. Its one way or the other!