that closet is also supposed to be a laundry room it's like 10ft. deep x 6ft across. it's got a dryer vent that goes straight up i've been using as ventilation. it's starting to drop below freezing here at night so reversing the fan should cool the hps nicely. plus im going to use the hps as a area saturation light, i'll still be using cfl's for the close up stuff and keeping the plants from stretching.
Yo with the 1k you wont need the cfl's unless you want to use them under the canopy. Thats sweet that you have the dryer vent. Id be careful blowing freezing cold air across the hot bulb it may shatter. Just use a AC reflector and vent the hot air up the dryer vent or vent it back into the house and heat it like I do with 2 x 600's. Just get the heat out of the grow room. Nice plants btw..