a 250hps would do well for 2 fems just make sure to veg em well and make sure you start and veg at least 4 seeds and hope for two fems. usually you will get half of your plants to become female. first time i grew inside i ended up with 12 males out of 12 plants.
males happen. you can use cfls but you will only get about half of the yeild that you could have gotten with the same wattage of hps lighting, maybe a little more imo. peace.
