what if you build a box? put a big plant below it. just 1 plant. top it and train it so it grows thru the bottom of 2 separate boxes. have each side sealed separately. with enough veg time you could get 2 nice main stalks. 1 growing individual branches in each box. you could maybe start by vegging both sides. then put 1 side on 12/12. leave the other side on 18/6 and continue to veg. you will have to take cuttings from the veg side for the first month then let it regrow those sites for the second month. by this time the 12/12 side should be finished flowering. harvest that side leaving the leaves and branches and only remove the buds. put it back on 18/6. now flip the second side to 12/12 and repeat. ........