Where are the seeds from?
I did Blueberry from Dutch Passion once and got almost 2lbs from 6 plants under 1000watts.
How many watts are those CFL's each? I've never seen that style in 105w. 12 lights @ 105 watts. You could switch to 2 600w HPS bulbs and get way more light with less electricity.
I'm subscribing to this thread. I love blueberry. If you really have good blueberry genetics and treat the plants good you can end up with some 1+ ounce colas.