Yeah, also now that you posted the channels you're outputting on, I'd probably try to keep blues on one channel and whites/colors on another. That's one thing that I also did that I do not regret, is that I have all RB on one channel, then CW, NW, R, G, V on the other channel. The "colors" channel mixes nicely, and if I want a whiter look, I turn those up (100% is 700mA on that channel, I still run them at 45%). If I want a bluer look, I can turn the colors down. I don't think mixing white and blue on one channel will be helpful, and should be avoided, as you can't control coloration as much then.