Also some advice on making it show pre-flowers I had 2 big bitches in veg and they say it's not good to put a plant into flowering until it shows pre-flowers (stress) so what I did was put them into complete darkness (no light leak) for 36hrs 24 is not enough and 48 is too much you should see signs of pre-flowers after the 36hrs and then put them into flowering following the 12 on 12 off schedule.

Looks like you got everything under control, just trying to help anyone I can as this site does the same for me, I am starting a grow log soon, so you can drop by and check out my setup I think I got it down.