Ok, then you need to make the pic smaller. That aint my department. But pruning is something you could try. Are you limmited on your height? If not I would try a normal grow first if you have not yet. And do some research on topping. I just got great results from topping one of my plants. I was playing around with a method called "FIM". And damn did it work. On the last page of my grow you can see how it effects the plants.
If you are running on windows just right click on the icon of the pic. Go to Image on the tool bar then click stretch/skew. There you can make your pic 50% smaller or any size you would like...