you can do anything you want bro, but as far as it being worth it..... absolutely not.... cfl's can produce but only if you are willing to dedicate the time effort and love to make it happen...
You'll be fine in the begining, but as the plant gets bigger it will grow slower as it outgrows the light.
You'll also be looking at an extended flowering time and very airy buds if you can get it to complete.
Maybe start the grow with 100w 2700k 100w and add another cfl when your plants get too big for the single cfl. Then you would have chance to put a 6500k or similar in there at a later date giving you a very good mixed spectrum of light.