holyyy shit, did not see the picture. You probably do not want to do 3 75-watt CFLs, as your plant is way too stretched and big. You probably want to do more like 6 42-watt CFLs, as you can get more lighting over the canopy that way. i'm sure 3 75-watters will work, but it will be more even light distribution if you get it all around the plant. up to you though.