well yeild depends on a bunch of things.. like for instance what size pots u have, what kinda light(looks like hps), how many watts, hows ur airflow, whats the temps like, what kind of nutes are you using, and lastly what breed is it, those are some major factors.. also any guesses would be just that.. a guess no one will be able to tell you how much to expect..
but i can give you a word of advice i would reccomend not spraying your plant while in the flowering stage.. it can help mold and fungus grow on your beautiful buds..nd im sure u dont want that...
best of luck..