how much yield?

hey guys,
havent posted in a while but i got 4 plants growing under a 100W HPS and 4 100W CFLS. They are a little over a month old and range from about 9 in to 16 in tall. they have been on 12/12 lighting for just over a wk now. how tall you guys think they will be come harvest? and how much yield do you think?

btw they are some kinda purp strain and all are females

3 to 4 oz per plant indoors.

If you don't want any disappointment start thinking as little as 1.5 oz, but you can hope for as high as 4 oz.

thanks for the feedabck guys. what about the height?

a plant 12 in would grow to 30-36 in during 12/12