This is really a phenomenal grow, I did all this research as well but so far cost has prevented me from pulling the trigger so I've been using 4300k fluoros for a while. Wish I found this thread sooner, I think I would have just invested in those bulbs right out the door. I just got a bunch of 420nm and ~420/630nm T5s so I'm real excited about retrofitting them in. (For like $6 each I just couldn't refuse.)
I am using arrays of 4x24W T5s though so I don't have anywhere near your wattage. However my bulbs each have individual reflectors, which I have not seen in any commercial T5 array yet muahahha!(except for absurdly overpriced T5 arrays for aquariums) I do coco and aero and am planning on running side by sides, so I can't wait to see how my stuff compares to yours! By the way, in my research I ran across an article suggesting that some light in the 500-600nm in addition to red and blue enhances growth. Here is an excerpt from the abstract
reen supplemental lighting could also offer benefits, since green*light*can better penetrate the*plant*canopy and potentially increase*plant*growth by increasing photosynthesis from the leaves in the lower canopy. In this study, four*light*sources were tested: 1) red and blue LEDs (RB), 2) red and blue LEDs with green fluorescent lamps (RGB), 3) green fluorescent lamps (GF), and 4) cool-white fluorescent lamps (CWF), that provided 0%, 24%, 86%, and 51 % of the total PPF in the green region of the*spectrum, respectively. The addition of 24 % green*light*(500 to 600 nm) to red and blue LEDs (RGB treatment) enhanced*plant*growth. The RGB treatment plants produced more biomass than the plants grown under the cool-white fluorescent lamps (CWF treatment), a commonly tested*light*source used as a broad-spectrum*control.
Not sure if that means its worth it for me to throw some green in the mix too