Wow thats an impressive trunk...lol
On average I've read plants usually double in size...hope theres room...may even triple for some strains.
Good luck and happy growin'
I am in the throws of fully switchin to led.. At he moment the rig consists of :-
3x 3500k 54w Cree Optic1
1x 660nm Red 36w lamp
1x 660nm and 850nm iR 40w lamp
2x 365nm 36w UVA lamps
1x Phantom XL dimmable
1x 30w UVB 10.0 T8 cfl
1x Green 25w led lamp
6x secret jardin 26w bloom bars
2x 2700k CFL 35w
2x 2000k rustic led
and i have one more 3500k optic1 cob on order