Now you guys are making me want to get some! I finally convinced myself that bichirs we better. Grrr Lol.
I'd add the tetras, plecos, and ropes first. If you don't have a QT tank, then add the ropes very first, and treat your display tank as your QT tank. Then add the tetras and plecos, and lastly the cichlids. That way even if they aren't territorial now, they can't establish the tank as theirs only.