400 watt metal halide grow

First grow! LA Confidential w/ Cheese 400 watt Metal Halide light with 4 75 watt CFLs for the middle of the plant that is being shaded by the top leaves. 2 weeks into veg right now. 1 6″ Cool Tube reflector with a 250 CFM duct fan venting hot air to attic. 4″ fan on intake to blow circulated air on to bulb and cool it. Also installed home made AC over fan. Copper tubing coiled around the fan with a 5 gallon bucket and 170 GPH pump for ice water to cool the system. Room temp is staying between 72