If you really are concerned about wanting to use HPS for your flowering, they also make 150W HPS I seen at Lowe's which I thought would go good for my grow, but I don't have the money nor the patience to rig that up so I just stick with CFL's! They produced some mighty fine bud on my last grow and it was fairly easy to keep the temps controlled with just an oscillating fan. Besides that the way I see it is, do whatever your comfortable with buddy, we're are all just here for some guidance and insight to anything you may need help with. If it's one thing I've learned since joining these forums is that the people here are all great people to get advice from, so just read as much as you can and enjoy your ladies as if they were your own child and they will treat you right I promise! So good luck and happy growing my friend! :thumbsup: