Aeroflo2 60, DS XML LEDs (just started flowering - day 4) any criticism/suggestions?

This is my first aeroponic grow so as anything else - it's an ongoing learning experience. Here are my basics:

GH Aeroflo2 60 plus I added fifty micron spray nozzles to every site to optimize the delivery
- grow sites are staggered checker board style to allow extra room with a few smaller plants I kept in empty spaces to see if they get better
- mix of strains to see which like this environment better; White Diesel, Pineapple Express, Juicy Fruit and GDP are doing great / Goji OG and Bubblegum - not so much (look like bonsai trees)
x2 Diamond Series XML 350W LED grow lights
Advanced Nutrients Sensi Grow/Bloom (Used Voodoo Juice & B-52 for veg, superthrive)
Res tank temp at 68'F
Room temp - 72'-74'F daytime, 64'-68'F night
PH at 5.5 to 5.9 with no major spikes/drops
Change the res once a week, adding RO water almost daily (they drink a lot)

As I said in the title, it is Day 4 since I switched to 12/12 cycle for flowering and this is what it looks like:


My main question is if this is anything like what you would expect from Day 4 flower after 8 weeks in veg? I've grown in soil indoors and outdoors before and I must say that this is very different. Wanted some input from experienced aeroponic/hydroponic growers on whether or not I'm on the right track. Thanks in advance

It looks very healthy, but I am not noticing too many bud sites, could just be the picture size. But a good even canopy will ensure that bud size is fairly uniform rather than 1 large cola per plant with lbs of b-buds. Keep taking pics, I am interested in the LEDs mostly ha.

Thanks. Today is day 7 since I switched to 12/12 so they are still stretching and just started little petals everywhere. They should start budding sometime next week. I just trimmed all the underbrush off so now it's a solid canopy on top and all groomed below. I will post some pics later today. And as far as the LEDs, on top of the ones I mentioned above, I got two red 660nm LED lamps to add for the flowering stage. I wanna try to go for hash tips. So I'm pretty interested in how that goes myself.

So this is Day 9 of flower, I made a few modifications to my setup. Primarily adding 2 red 660nm spectrum LEDs and build a 'cage' of sorts to help support everything and prepping to hang twine to hold up the plants as they bud. It now looks something like this:
The plants are acting strain specific it seems, Pineapple Express started budding:
but White Diesels are stretching and stretching 1-2 inches daily: ,

White Diesel and Pineapple Express seem to be my strongest strains for this kind of setup so looks like for next grow they are the ones I'm gonna go with.