PURPLE BUBBA, PLATINUM BUBBA,BANANA KUSH GROW

Is an oz. too much too hope for, I thought it was a reasonable goal, what do you think? I got 3 platinum bubba kush clones, 9 purple bubba kush clones, a banana kush clone and 3 bagseed plants.
:thumbsup:All of them are starting thier 3rd week of flowering today and they're about 18 to 24 inches tall, some of them are real bushy and have a lot of shoots coming out and the others are just real tall with not much branching at all.
If you've grown any kind of Kush I would like to hear what you pulled off of each plant in after drying and curing, because I just found out that kush plants don't produce a very high yield.:wtf:
So this is my grow.:D
I have all the plants in 3 gallon grow bags with organic soil.
I have a 600 watt Lumatek digital ballast with a hps bulb.
Intake, exhaust fan, charcoal filter, circulation fans, all that shit.
I feed them all with Fox Farm nutrients.
Everything is in a 8 by 8 room but the plants are in a space 6 by 6, so I got room.

So I thought an oz. per plant would be a reasonable goal, is this crazy or within my limits? I wish I had a camera to post some pics. I'm trying to get a friend to let me borrow his for a couple of months until my grow is done, we'll see how well that plays out. Any info will be greatly appreciated.