I'm fixing to grow a plant listed as "medium to tall". My grow space is 15" deep X 26" wide X 4' high. The question I have is...with this limited space, rather than a 5 gal pot, I am looking to grow in a 3 gal pot, topping and lsting the plant and maybe even putting a small scrog net about 12 inches above the pot to see if I can contain the plant (Cancer's Nightmare-photoperiod) seem a doable grow? My alternative is to grow an auto in a 3 gal pot (Industrial Plant CBD auto). I need any suggestion on my photo....primarily