I have a 4 x 4 tent for flowering with a 1000 watt hps. This was given to me as a package. Everything I'm reading is talking about a 400 or 600 watt light in the same area. Is the 1000 over kill or will it be ok? Would I be farther ahead with the cost of operation going down or should I stay with the 1000 watt? Any help would be greatly appriciated, thank you!