That plant still has at least another 4 weeks to go until it is finished. It isn't near done and guessing will be like trying to read someones mind. Impossible to predict how much you'll get. None of us know how dense those buds are going to get, or who knows what could happen to it by overfeeding from now till the finish.

Just grow it, finish it, dry it, and let the scale tell you how much you got, because it's a ballpark anywhere from 7g's-30g's, impossible to tell.

Good luck.