You said your feeding brine shrimp to descent sized cichlids, I'd advice you go with something more nutritious like mysis shrimp instead. A good pellet for a staple and pe mysis as a treat your fish will love you for it. How you design your tank is all your own personal taste but I prefer sticking to either all rocks or all driftwood. I try to replicate their environment best I can so I only use live plants and real wood and stones.