I am planning on setting up 2 4X4 trays with a light mover on a 8' track, i would like to load one tray with 9 to 12 plants and flower for about 30 days then load the other tray with 9 to 12 plants, so as to get a harvest about every 4 to 6 weeks, i am running a 600 watt light, does this sound like a problem? the only thing i am really concerned with is the amount of stretching that might occur.