I work with a 400w light and lowering your light closer to the plant will get you fatter nugs and a higher yield. Less plants would actually be better than more. You would need 6 plants for 6oz. Instead if you grow 2 plants you can easily get over 6oz per plant. Put them in 5 gallon buckets and keep the light no more than a ft away. Every foot further away from the light you lose lumens and intensity. The closer to the light you lose footage but you have intensity and lumens