Thanks for all the generous comments. My light is at a fixed height, 3.5 inches off water level. I hope o don't run into alagae probs, but that's why I bought shrimps and otos. Here is a pic of my DIY:
@ kai808: thanks for the shrimp trap suggestion.. gonna google it now.
@ neoman: this is it. I won't add any other rock or plants. Gonna focus more on caring for the cichlids now. I'm happy with the way things turned out thus far.