VV has a god point seems like alot of work just to save your self an extra light...but all the powet too you if you can handle it...but i had the idea....im not sure if this would work for you, i dont know your setup. But saying it is possible...set up both flowering rooms right beside each other (in the same room or space ,assuming it big enough) and instead of moving the plants...move the light . This can be done by installing an upside down track with part of it extending into both flowering rooms, while divideing the rooms with a hang up "wall" that light cannot penatrate, which has a zipper so the light can slide from side to side yet still allowing for the wall to be closed...slide it to one side for twelve hours then back for the other twelve zipping it up each time...i dont know if you get me and it will take a bit to set up ..but once set up, sliding a light is easier then moving 12 plants every 12 hours ...lmao i am STONED