atm everything looks fine.... you are going to need your extra 200 watts for the Flowering stage. Using it before? i see no big need. Look how she develops and always shows a good internodial distance. I dont know how big your growspace is but 400 watts HID should be enough for a growingspace like 2x3 feet..... so keep your girlin your eye.. if she start to grow to dense with a short internodial distance dimm the power down/ rise the lights. If flowers has appeared around week 2 of flowering stage you can give all your wattage on her, shes strong enough then