when to flower with + lst'ing

I have a 2x4 tent with sf2000 and i want to max out so ive lst’ed a couple and topped others and tied branches down. When should i flip?

3×6ft closet, average humidity 50-60%, two 600w LED one bloomspect one wills, average temp 70-80°f, 100% coco coir.. thats my flowering room its on a 12/12 timer.. ive got six 5 gal pots transplanted 2 weeks ago from half gal..approximately 6 weeks from germination topped about 4 times.....wen...

So I've received tons of help on here regarding deficiencies, soil, nutes, etc. now I new a few pointers on scrogging for those of you who have experience doing so. I topped my plant and used quite a bit of LST to produce a canopy im alright with. However, I want to take advantage of the scrog...

first grow , 4 by 4 with 6 foot ceiling 9 plants, half short , half medium height, topped, and LST'd , soil/soilless grow, cuurently in 2 gallon pots looking good, some of the palnts would be about 2.3 feet tall with out lst/topping at least about 8 weeks in to veg, some heat problems iniitally...