WOW 10 plants and only 1 female, thats wicked bad luck! I've had 6 out of 10, then 2 for 2, then 2 outta 3, then 3 outta 4 female. Damn did i just jinx my next grow! LOL NAh i got a fem clone now. Whew....
Anyway....its up to you if you want to swap out your current light/ballast/ hood setup for a cooltube light with remote ballast. Cooltubes aren't cheap. And the setup you have IS working for you. You may just decide to tweak your current setup a bit. That is what i would do.
The self contained (ballast/light/hood) setup you have is going to have a relatively short lifespan (because of excessive heat & thats another reason why a remote ballast setup is better). So I would use it untill it dies and THEN i would get the cooltube. But thats just me. For now I would do what i said before...put an ocsilating fan on the floor blowing in. and something in the top of the doorway blowing out. That should shave several degrees off the overall average temp in the closet. My 1st grow (in a closet) i was constantly tweaking the aerodynamics moveing the thermometers around taking readings , moveing/changing fans and trying to see what worked best. I dont have that closet anymore (i moved), i have a grow tent now. temps have been good sofar but summer hasn't turned up the heat yet, but i know its going to get hot, so thats why I'm working on a DIY cooltube. I'm also working on a DIY carbon filter that I may share with RIU in the DIY forum if I'm pleased with the final product.
This is what I did with my closet....
I put this fan in the top of the doorway blowing the hot air out. with a small oscillator on the floor blowing in. It worked much better than anything else I tried. What do you think about that?