CFLs are good, for a compact grow but from sounds of things you got a good space to use that wont be used effectivly from CFLs unless you buy loads of em which will cost more than one big light, 400hps+ would be much better with say a couple of small 45w blue cfls for the veg room, I no you trying to save money but it will just cost you more money down the line when you realise you are not getting the full potential out of your plants. I used a small 125 blue and red CFL in the end i have ended up splashin a extra £120 on a HPS and extras, i got ok results from the CFLs ( just over a ounce dried) but under a HPS i would of got 4 times that amount