get a 4 pack of 6500K bulbs, and 2 light socket splitters, find you two light sockets (you already have one) and keep those things as CLOSE as you can, but still with enough room to grow. best to keep 1-2 inches away NO MORE than 3 inches if you can help it.
to get it to flower you will have to switch back to the 2700K bulbs and 12/12 light
your's looks like my first grow stretched. but mine had bad heat stress cause of the bulbs i was using. i switched to the CFL's and its made a huge difference. check out the link in my sig for my grow. im at 3 weeks from seed.
check out kingdavid's grow too he has a great lookin plant growin.
there are a bunch of threads that will help you, just take the time to read em!