Well with the various CFL grow journals I've read over time I would say about 1.5oz per plant indoors kinda seems like an average for less experienced indoor growers.
But this is still just an estimate.
Flowering averages 8 weeks, CFL doesn't shorten that as far as I know. But again, the length of flowering has a lot to do with what strain you're growing.
Be sure to keep those CFL's close to the tops too.
Can you get any pics up?