I do have a friend who uses all these guidelines on all grows, and claims a 90% ratio of females. That is impressive.

Filthy, I think you would be hard pressed to outdo mother nature, as I re-read your post, I kept wondering if you were growing for personal or for profit, it sounds like it's for profit. How can you out do mother nature, a well grown plant outdoors can yeild over a pound, a well grown plant inside can yeild....ounces.

I could think, and wonder if 24 hour light would speed up vegging, however from all the reading I've done, I have never found any info to support this theory. Only an increased electric bill. I also agree with GardenKnowm that giving the equipment a rest is important too.

Lando, it IS interesting that a company put the time and expense into this study, you need to utilize all the info they posted. A 90% female ratio would be awesome. I think from seed, a normal ratio is like 60-40.
Peace