Farthest to the right in the picture for veggation which is around the blue part of the color light spectrum.
Now, for flowering, you sould use the one farthest to the left which is around the red/orange of the color light spectrum.
You should also 43W CFL which is equal to a 150W normal light...
I think you'd be good with a 600w HPS if you has a spending limit like me, I just bought a whole kit on HTGSupply for about $200. I came with a reflector a 600w HPS, and the whole ballast kit. I thought it was a deal.