I have to say dude, on my grow I wish i'd gone for less plants I believe I would have had more buds... Your tent looks like it would be better to have 4 plants rather than six.

When it starts budding make sure you keep on taking those big fan leaves out so the light can get down.

Lastly, If you put a tube light at the bottom of your grow when they're a little older it will make big buds under the cannopy! take a look at my grow to see what I mean.

Hope it helps!