Amazing job your doing here! You should post over at the quad journal for more eyes on your questions. Your obviously way better at it than me. I'm gonna up pot soon and really start training. I've been clipping nodes growing out of the bottom of stems and every other node on the first couple so far. I'm also an auto newb but I read you want more light than less. Assuming you only have 1 tent so they're gonna have to be at 12/12. I don't think light cycle effects flowering in autos, meaning you could flip sooner and they will still veg in 12/12 but again, I'm not sure.
What I am sure about is I will never use another grow medium/nutrient system, I'm a Doc Bud "Kit" user for life. It's organic, inexpensive, easy to use and if environment is good and you follow directions you're guaranteed to grow amazing top shelf weed! Some of the smoothest you'll ever smoke. There is unparalleled support right here on the mag from a great group of Brixxers. More info here, DOC BUD's HIGH BRIX BLEND and here, Doc Bud: High Brix Q&A With Pictures
What I am sure about is I will never use another grow medium/nutrient system, I'm a Doc Bud "Kit" user for life. It's organic, inexpensive, easy to use and if environment is good and you follow directions you're guaranteed to grow amazing top shelf weed! Some of the smoothest you'll ever smoke. There is unparalleled support right here on the mag from a great group of Brixxers. More info here, DOC BUD's HIGH BRIX BLEND and here, Doc Bud: High Brix Q&A With Pictures