First Grow (6 Fem Buddha and 8 kush from BCSeedking)

I germinated 6 feminized buddha seeds and I believe 16 kush. I ended up planting all six fem buddha and and 10 kush. Lost two kush that never sprouted. My set up is 5 1/2 ft tall, 4 feet wide, and about 2 1/2 feet in depth. Currently using eight 100 watt equivalent and two 150 watt equivalent cfls. Plan on using the CFL's until flowering stage, when i get my HPS cool tube (be ordering either this week or next week). I am currently having major heating issues. I have two computer fans wired for intake and exhaust. I'm guessing they are not powerful enough to move the air in and out of the box efficiently. I plan on buying an inline fan from home depot this weekend and doing the DIY carbon scrubber on this site. Currently I'm just leaving the doors open with the oscillating fan going at all times on highest speed. Temps stay around 82 door opened and in the 90's closed. Any advice or comments in general will be appreciated.

Also I'm using miracle grow organic potting soil for now, but plan on switching to fox farm organic. I think I was over watering at first because some of the plants bottom leaves are drooping and two turned yellow and are dying off the plant.