First time growing Looking for feed back!

First let me start by saying I am no expert at this! I am fumbling around hoping that I stumble up on some good smoke! I have been glued to the message boards and forums and soaking up all the knowledge that I can. I thought I would throw a post up with my a few pictures of my plants just to get some feed back from some of you experience growers.

These were just some random seeds that I took from a sack that wasn't the best smoke. The plants starting show white pistols about 2 weeks ago. They are on a 12/12 cycle and as you can tell I am running out of room in my grow box!

This photo was taken 8/16:

These were taken today:

I would gently bend/lst her to the best you can to get more headroom.

Your plants are only going to continue to grow. My suggestion would be to bend/LST like Ogonzo suggests and rig up some sort of scrog net to weave into. Next time top those girls early and it might help with your problem in the future.