they will immediately start to lean or stretch to whatever light source, it's a survival thing all plants do it, but fast growing things like marijuana especially noticeable, I would suggest getting a light directly over each one if you can, or adding a reflector to distribute the light better.
As long as the plants are centered, with only that many lights, you are going to have problems. You are going to need way more lights in the long run anyhow, if you want to keep those plants going.