Indica Flowering???

So ihave 8 blue widows goin rite now and the biggest is about 8 inches tall. they look healthy and are gowing very fast. i wanted to put them into flower in a little over a week at (hopefully) the latest. I just wanted to know that even if they are only like 10in wen i put them into flower, how much more will they grow and ROUGHLY houw much will they yield. or wat is the best height to put them into flower

From info I have gathered you can flower as soon as a week or two into Veg. Also, you should expect the plant to grow 25%-50% in height after you begin flowering.

well I suppose anything is possible, but you want the plant 1st to be sexually mature, meaning alternating nodal arrangement and leaves with 5 or more blades. When you have these traits, your plant is mature enough to flower.

Having said that, if memory serves me correct, you have the 400 watt light?
With that as a source, growing an indica, I'd want to flower at about 12 inches, maybe 14, but not more. The plants will atleast double in size. They may triple.
Dude, if you get an oz or two per plant on your first try, you did great!
I hope this helps you.
Peace

wen u say "mature" does that mean a mature plant will more likely be female or just produce more bud???