"In tent 1 I will have a 4ft 8bulb t5 floro fixture with 54w 6500K with the supplement 90w LED for flowering (8 plants), and in tent 2 I'll have a 600w HPS supplemented with another single 90w LED for flowering (10 plants). So I think I'm set if you think that a single 90w LED for veg will cut it for up to 10 plants (my pocketbook thanks you.)"

In reality you'll get the same results with a 120w panel - my current two-bucket DWC/Krusty experiment is blowing anything I did under 432w T5HO all day long for veg.
"Now the question is what kind of specs I need for the lights? I know you said that I'll have to get triband to get any decent results and that I should look for a 30% blue: 70% red ratio. The problem is that when I looked into the tribands, everyone posts what specific spectrum of light each of the colored diodes puts out, but nobody posts specifically how many diodes of what color there are on the panel."

40% BLUE, 60% ORANGE/DEEP-RED in a particular response period for basic and advanced flowering growth. I have the patent so anyone copying that's gonna get owned in court if they buy a panel and copy it. I have the US Gov't backing me up as a potential supplier of LED panels, so I'm set for protection design-wise.