that is still pretty vague. though i would say no, that is not enough lighting. lighting has a lot to do with how much nutrients you allow into the system. the less nutrients the less lighting you will need.
how deep is the tank? if it is about 18" deep i would go with 3 250w MH. that should be plenty of light even if you were to keep hard corals and maybe an anemone. you might want to also use some florescent to adjust the colour to your liking.