hey sour , Im with demon trich ; not sure how you can do perpetual with those parameters. I have been growing well over 20 years (still a novice tho) and my best single harvest was around 13 z under 1 600 hps in a 4x4 tent with soil in 5 gallon bags . However that was not using any "super yield" strains .Mostly DJ Short Flo. I am pretty sure I could break that lb mark If I was a better grower, The only thing I dont have going for me environmentally is CO2. Other than that my tent stays under 78 at all times and usually is barely above 70 (lights on). I also top all plants and I clean my tent every other day. If I knew more about Nutes and soiless mixes Im sure i could break into the lb club, or setting up Hydro might get me there.... I enjoy the final product from dirt grown flowers more than other methods. Good luck