upside down growing

so i'm building a 6ft. long by 4ft wide, by 8ft tall wooden grow box. it will have a reflective lining so light will be contained. i was planning on growing the plants upside down. watering and finding a proper pot is not an issue, and i know it can be done. what i want to know is will my yield or potency increase by sucessfully growing an upside down plant? the lights will be in the floor and there will be plenty of ventilation. all the conditions will be ideal for growth, but i dont know if the effort of a successful growth is worth it.