Wow, your tank is looking incredible!Here's my 240 gallon with Syngonium .Just to let you know,cichlids will eat roots in fact my plant is all rope like roots until they go into the sand and gravel substrate,THEN they develop the fine roots. The Rainbows eat any of those fine roots that are exposed.
What's the other plant on the tabletop, on the left of the photo? Is that a dracaena?