I appreciate all the advice but I've already ordered the parts and mostly assembled the fixture so it's a little hard to make changes. I'll try to provide some more info to explain my rationale for the LED selections I've made.
The tank is only ~17" deep but it's going to be set up as a riparium so the light is going to be suspended a good 24-30" above the tank. That's why I'm going with the 60 degree optics. Only the white LEDs have optics, the colored ones do not.
I actually picked the combo of deep red, deep blue and turquoise to match the combo of LEDs in the OCW. I was initially going to order OCWs but they were out of stock at the time so I decided to just go ahead and order the OCW components separately.
It looks to me like the 660 deep red should hit upper absorption peak of chlorophyll A quite well, and the 475nm deep blue will hit the lower absorption peak of chlorophyll B.
I realize that the 495nm turquoise isn't doing much for photosynthesis but I included those to try to balance out the overall color to white like the OCW supposedly does.
Regarding the low Vf for the red channel, is this really a problem (besides not using that Meanwell LDD to its full capacity)? I was under the impression that there is no lower Vf limit when using the meanwells or am I mistaken? Am I going to damage anything by having too few LEDs on that string?