26 plants dwc

first of all this is going to be my first hydro grow, the idea is to have all the plants in bubblers, starting with two mothers under a 400w mh in 5gal bubblers, Clones would go into a six pot bubbler 21" L x 14" W x 14" H under floro's till root then for flowering i would have three of the 21" L x 14" W x 14" H six pot bubblers under a 1000w hps. only filling three of the pots from the clones every two weeks, the idea being that after 8 weeks or so i should be harvesting every two weeks from three plants. im only really wanting to havest an ounce or two every two weeks, im worried this might produce more but i might be wrong. If you have any feed back or advice that would help, just really wanting to know if this sounds like a good small system.