If i were you and this lighting is the most you can have. I would either reduce the amount of plants and tighten up the space a bit ooorrrr try and go with 1000 watters. I'm sure everything will be fine if you truly have 4500 lumens per sq foot because the best growth is done at 5000 lumens per sq ft. Going by watts 50 watts per plant is what i go by and 200 watts is my max wattage per plant.