I've heard and from data sheets I've seen, that the far red and ultra violet LEDs dont produce anywhere near the amount of light (however you want to measure it) as white leds.
So you get the space ship problem.
The more weight you need to get in to space, the more fuel you need to get it out of the atmosphere. More fule= more weight = more fule = more weight...
You're using your wattage to power leds that arent as strong, so you have to double up on them, taking even more of your wattage, making less wattage for the white light. Add on top of that the output of lm301b's, makes the red ones even less effective.
So while there may be a bit more of red in your spectrum, it comes at the expense of wattage that could or might be better spent on the more efficient and effective light.
Just my opinion there, I dont think the little bit of extra red you get is worth wasting wattage that could be spent on lm301b's. This is only for prebuilt light fixtures you pay for. If I was to build a led fixture from scratch, I would include red, and just use more wattage