I spent about a week of reading different opinions on lighting as well as actual measurements from different types of bulbs. I came up with this, its all freakin expensive but spend it all just once because it costs way more to constantly upgrade! I made that mistake about 3 times so far and have spend more cash than I would have if I had gone all out the first time. I would say go with two 250W instead of 150W. Not too terribly much more expensive for the additional light. Will consume more power and create more heat though.