I think that if you want your plants to have big dense buds, you're going to need an HPS or MH bulb. I started like you; tons of cool blue bulbs. After getting the clones on their feet I realized I needed a lot more light. At 6 bucks a piece, buying say 6 or 8, you're going to start wishing you could take back the bulbs and buy yourself a little more worthy light set up. Don't get me wrong, you're plants look great for what you have, but don't forget you're trying to get something from the plant. Check Ebay, you'll be surprised.