Its impossible to know yield based.on your light. for example...
finschwaggy probably yields about 20-30 grams per 1000w light (if he could afford such a fixture)
i get about a pound per light. i grow completly organic. im sure there are others with slightly better indoor results, but your question dosent give nearly enough info to judge what the plant will do. it could do as little as 7 grams (least ive personaly seen) to a couple pounds.
but if you believe in miracles, and you pray really hard, god will bless your yield, and you shall have a 10 pound yield. thats the real secret to growing. beleiving in miracles