on my first grow before i moved i did a cfl grow, i WASTED time money and good seed, they will veg fine and you can put the light close to them but they flowered really weak, the buds were whispy and airy and the yield wasnt that great, after curing what i had was decent but fluff~~
you can get away veggin on cfls, but depending on the size of the area id get atleast a 400 watt hps for flower!! buds are already way more dense on second harvest and there still a month out,
my setup at my new place i use cfls for veggin and cloning and hps for flowering, also, i have added the energy efficient bulbs to my place and more diligent about not leaving shit turned on and my bill hasnt increased at all!!!!!