Hm, since I cant edit my post, I guess I will just make another. From what I understand, one should ideally exchange the air in the closet/cab 3 times a minute. With my room size, this would require 270cfm without accounting for ducting or anything of that nature. My idea is to hook it up like this: carbon scrubber>----->euro reflector>----->inline fan>-----
>outside vent. I am pretty sure that will take care of the heat from the light, but will there be enough air excahge? Should I add an inlet and outlet vent?

What about air movement inside of the cab? I would ideally like to have some sort of oscilating fan to create "wind", but I dont see room for that.. Should I mount some sort of large fan above and in front of the plants?