I have a 16in x 16in x 4ft tall stealth grow box lined with reflective foil(heavy duty restraunt foil not the stuff in your home) I have the soil and drainage and heat and airflow all taken care of now I was just need help with the lighting I was thinking that 3 cfl lights at 3500 lumens each should be sufficient to grow autoflowering am i right or will I need something more powerful?