Looks good for just 1 plant BUT if the dif in price between the 250 and 400 is'nt that much definatly go 400. I have been growing outdoors for 10 yrs and this year is my first indoor and I am running 2-400wt for 25-30 plants and I wish I had got 600's. The more the wattage the bigger and better your plant will be and if u ever decide to add a couple the light can handle it. Good Luck!!!