Please see my previous question

Impressive. did not sate it was a lie just wanted to see the quality of the plants. "I now have a 240w kingbrite Will 9 plants be to much? Or, will it be manageable like previous grow and all buds will tighten up?" As you have done it before. I would say you could do it again. 9 plants in total. I myself would not, and would stick to 4 or less but you seem to have it down.. Like other said genetics dedicate a lot of how the plant performs. the numbers user "00110001001001111O" is smart and know what they are talking about for all lighting needs. I would listen to them on what they are saying.

12/12 from seed is probably fine. 1 sq ft per plant. Keep vege short or as short as possible and should be okay. as far as whether or not the buds will 'tighten up' is a matter of genetics. Yes, you'll maybe to make use of the light upgrad. Efficacy varies so watts are not the right metric to use. .64m^2 x 860 --- Any light with 550 umol/s PAR production will be a good size for that tent.