jk, did you happen to catch the feature in the NY Times on Orozco?
okay drdre, so you're at 48w/sq. ft.
it looks as if you're finishing up with healthy looking plants and you had minimal bumps along the way.
generally speaking, from this point forward, there are two areas that are going to have the largest impact on your quantity and quality (assuming you stick with the same genetics). the first is quantity/quality of light, and the second is vpd.
you're currently at 48w/sq. ft. in your room. assuming you stick with the same size room and with HPS, you would look at increasing the wattage on the plants. 60 watts/sq. ft. would up your game significantly . . . . 65 would be spectacular . . . 80 w/sq. ft. (while maintaining your vpd goals) and you'd have an epic grow.
this is not only about throwing more lamps into the room. you've got to have the a/c and humidification to supplement the increase in light.