looks about 1.5 weeks into flower cycle. if I was you. I would take all 4 of your hps lights and hang them above. This will let your plants fill out more, instead of stretching to the light in 20 different directions.
You should have a main source from above that is your strongest. (simulates the sun) add more cfl;s to the bottom. personally I would just chop off the lower parts and make clones. or if you get a male use it to make seeds.

don't trim him. let him be just how he is. looks fine. (if he was way bushier then a good haircut can help) if anything trim off dead or dying leaves.

this pic, I had to trim him up, got way way too bushy. but anyhow. your guy looks fine