That's awesome, I am currently experimenting with diff training techniques for best yeild for my space. Have you tried letting the plant veg for 2 weeks after topping? Or putting it in right after topping?
Well you're on the right track though, experimenting. I would like to add at this point that i've only been growing a year, and don't spend anywhere near as much time researching at most, but I promise not to give you any advice if i'm not 100% sure.
I tried a little LST with 4 small plants, each under there own light fitting of a mere 50w CFL and manage to produce 9grams dry, with soil, pH, spider mites, and temps dropping far too low. But I found trimming a pain, and also with the desire to religously spray the underside of leaves with water, and personally, I found them more difficult to trim...but on just a few plants I guess that iit doesn't matter too much. LST done properly (not like my lazy example) does seem best for CFL's.
Topping: Funnily enough, the 2 that I just flipped were only chopped 4 days before 12/12 (this is my second attempt and how I did it last time), but the next 2 will have about 2 weeks after topping, and excited to see how this works in my set up, but a bit worried they'll be so beastly I'll have to buy another load of bulbs!! I like to leave the plant at least a few days after topping before flip, to allow the poor thing to get over the stress of having it's head cut off before being forced to flower.
This is a rule I use through out my gardening. The ladies are living objects, so I try to minimise stress by not re-potting and topping on the same day etc. This may be totally unnecessary, but the way I like to do things