bro, there doing great the way things are, i would just wait and finish the grow cause its really looking good, but its up to you. below is why you want to mix the spectrum up. did you make that new G.G.G. pic, looks good, now i have to get in my sig too, LoL. i made the 420 one in my sig, that was the original one and then someone else in the group made the other one not long ago, good job though!!
about the spectrums, you want mostly blue for veg, and mostly yellow/red for flower. in nature, the sun is much stronger in the summer, with mostly blue PAR (photosythiclly active radiation) which is what plants use from light (not lummens, LUX, watts etc..) and mostly yellow/red/far red PAR in the winter. so to follow "mother nature" you would want **example** 6 6500k cfls and 2 2700k for veg, and 6 2700k, 2 6500k cfls for flowering. seems sketchy to drop power when starting flowering, but actually increases yeild and potency, increases the productivity of photoperiods because the plant actually "feels" like its becoming fall/winter.