whiteberry wield???

how much yield should i expect, given all other controlled variables are properly managed, from (9) 10in - 12in whitebarries, w/1000w hps, mylar, co2, nutrients, in a 22in x 44in x 5ft height space? any advice on how to get the max yield? does the have to be inches away from the plants or can they be about 3 ft away the entire cycle?

whiteberry doesnt yeild so well but it whatever you do pull of it will be some of the finest herb to ever be grown