The scape is looking great! I would leave just one light on it for now since you don't seem to be running into any algae issues. Where did you get your plants from?
The only thing I would be concerned about is the "Baby Tears". If that is HM(Hemianthus micranthemoides name subject to debate), you'll have a problem growing it low as a foreground plant. It's a weed and could take over your tank. I suggest keeping it in the front corners of tank(to frame the scape) and also as a background plant. This plant has taught me a great deal about pruning stem plants.