I'll definitely be getting 4 of the 3000K bulbs for my T5 light and using it for the autos. I really like the lower temps and it really seems to give off such an evenly distributed amount of light. They are great lights, no doubt but I'll most likely be sticking with my 600HPS for flower. At least until next summer and if it get's hot again, I'll get this T5 fixture at the local hydro shop that's a 4'X either 8 or 10 tube fixture. I can't remember which it is but would really like to just go for broke and get the 12 tube one but it's too wide for my room.
I've seen a grow that's using the 12 tube fixture and it's really looking nice. Scrog like yours and little colas everywhere...