THX a LOT for your answers!!
I'm gonna build a L shaped plywood tank with 6 and 7.6 feet sides 2,6 feet deep and 3,9 feet high. There's gonna be a big nest/cave/spawn site at each end with sand bottom in the middle at the bend/corner. Each spawn site will have smaller refuge for the females and the cichlids when in their nests will not be able to see the other pairs nest. I'm thinking of putting in some wood/branches in the tank to act as a "speed bump" if a male wants to chase, and because i love the riverine look!! kinda like this trimac tank, especially the right side:
https://www.youtube.com/watch?v=BoMwoc0-1wA
I was hoping for a umbee and a festae breeding pair and two same sex oscars, non cichlid I'd like a bichiir, pleco, RTC-ish cat, and if possible a couple of clown and if fire eel, I also love the trimac and jag, but umbee and festae would be my first choice, and oscars!
p.s. jagster: what's the fish on ur picture looks like a JD except for the colours...
and again thx a lot for ur answers!! here most have rift and reef tanks, need to hear from IRL XP

thx!