your tops look like my bottom branches in my third week sorry buddy but that will be a very small yield"those are the smallest tops ive ever seen especially in the 5th week they should be the size of a 2 liter bottle mine are anyway
i would do 16 plants in a cirlce fan in the middle pointing up at the 1000w hps using perabolic shield and hang the light as close as possilbe using soiless"sunshine mix #4 i know somone getting 2 1/2 pounds a light that way consistantly
buddy u can do 6 1000w hps and have nothing to worry about relax and make some money especially if u dont live there light it up make it worth it jeez!