I have 2700k - 4000K mixed up.
3500K is the best "all around" for veg and flower.
Going with a 600 to 720 watts in a 4 x 4 area. (CO2 added)
Throw 50, 60 -100 watts of 660's,
plus, 60 - 72-100 watts of far red. Not sure what the correct ratio is. Problem with strips is no spread. Single 3V(5 watts) like CREE's, You can spread them out. I run 12-16 x 3v CREE's 36 and 48 volts from 700 - 1050mA on a 2" x 3ft heatsink .
Now, I just add them right along with my COB's on the same heatsinks. (5.88 and 6.08)