that's an awful lot of 'learning on the job' for a first grow. I would keep it as simple as possible. Then you can actually observe changes without wondering if the LEDs are close enough or if the 14 total lights are at their most efficient heights.
Personally, I'd try to sell most of the lighting and get a 400 watt switchable MH/HPS which will be more then fine for a 3x3. Hydro if you must, but organic hydro is very difficult to control (trust me, pH issues are making me furious enough to put the damn ladies back in soil (purple kush, flo, grandaddy purp and afgooey in the same DWC tub, oh my!). Organic soil is very easy to maintain, and a lot cleaner then you'd think if kept so. Please don't use chemicals, that cycle needs to end.
Honestly, from there all you'd have to worry about is fan's and venting and keeping the girls at the same heights to allow for a nice sog.
Hey man, you asked for advice. Good luck!