The only thing I own that compared to this is the AI Hydra 52s that I have on my 125 gal reef system. I'm not sure how applicable this is, but if we work through the math it looks like this.
A Hydra 52 is about the same as 4 Primes in the amount of light it puts out. I've got 4 fixtures on my reef, so that's about equivalent to about 16 Primes. So if we divide 16 into 125 it works out to about 8 gal per "prime equlivant". I run the lights at about 80% max across the board, and it looks like your running about 50% in the green, red, and white, and backing back on the blue, deep blue, violet and UV. This is about I'd do if I was running LED lighting for a reef on a planted tank.
So it looks like your using about the same amount of light that I'm using on my reef, less the blues and beyond. This would seem to be a massive amount of light for a planted tank, even one with CO2, but there are always a whole lot of other factors that come into play here. I'd say you could start with that much light, but if you notice the slightest problem, cut the light back accordingly, If you do cut it back, I'd cut it back across the board on all color channels, because I think you have the spectrum more or less correct.
Of course, you can also solve this problem indirectly by getting a much larger tank (grin).
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