how does my setup sound ?

I have a rubbermaid grow room with 2 18 gal tubs stacked on top of each other I'm running cfls that are 3 to 4 inches away from my plant I have 2 26 watt 6500 k and 3 18 watt 5000k ,on a 650 watt digital timer , as for ventilation goes I think I went over board I have a 6 inch 250 cfm inline for intake and a 6 inch 250 cfm inline for exhaust , and I will soon to be adding a carbon filter to both the intake and exhaust but for right now in only 2 weeks into my grow so ill work on that later . If there's anything you think I can do better or should change let me know