Please check out my cfl grow box design

Hi guysThis is a design i have thought up for a small cabinet i have. Please comment on what you think could be made better or changed completly to improve growth of my plants yeild etc. I have posted a very crude picture of the layout so you get the jist of what im going for. I am using on the basis that the space avaliable is very small so hps would be a heat concern(fire)and skipping on cpu fans for intake/outake because again its a small space so would it be really necasary.

Thanks alot for looking and any positive input is welcome

I would go ahead and pay for one PC fan. You need not have one for intake, but an exhaust fan is vital.
The 125 Watt bulb (actual wattage, I hope) should be ok for 2 plants. Remember to switch to 2700K bulb for flowering!

Such a grow may be well suited to 4 auto strains perhaps. This will be easy for you, as you need not change bulbs, and the lighting schedule does not need to be controlled.

cheers dyzel.yeh im using going to be using lowryders for my first attemptso if i go for 1 pc fan as exhaust and just a fresh air hole this should be cool.I will probly go for a small clip on fan in there anyway as iv heard its a good thing to have in there.