GO for it!!! you want as much light as possible. go with the biggest cfl's you can find, you will also need to side light, because of the smaller wattage not having the penetration to light the lower branches...you should be able to grow adequately using these....blue spectrum is for veg and red for flower, although you won't have as good results, either will work for entire grow...check e-bay if you get a little extra money...I bought a 400w MH and a 250w hps for around $60 ea. awhile back...goodluck, latewood