1000w hps do not penetrate 5 or 6 feet lol the key to growing indoors is maximising the sweet spot that the lights penetrate as well as getting all the environmental conditions correct
Theres a lot of different methods each has its pros and cons bro i use the K.I.S.S method which means keep it simple stupid lol i easy get a gram a watt plus which means over 2 pound dry bud per plant if i grew 24 plants id need a wharehouse to do it lol. If your smart you can cycle it every 8 weeks well i do