I was smoking and got to thinking how I would LST a 3 foot plant... And I thought about this thread I saw on LST... It may help.
Wow, You are going to have a beast! LST would probably be your best option, but I dont know how much space you have to work with. If you decide to LST, I would love to see the log for it .

Heres the link http://boards.cannabis.com/showthrea...&highlight=LST, It explains the picture attached.