Could I have any other cichlidsYou could get away with one of each in there, get some good filtration.
Ok, if I scraped the oscar and jack dempsey what could I get in there, I like the chocolate cichlid an do would want one of themYou could do an Oscar and jack Dempsey, and could probably get away with a severum or chocolate cichlid as well, something peaceful (ish). Keep in mind large cichlids are pretty messy, and the more you add, the more you will have to keep up with on water changes. Also, whether or not this stocking will work depends on the personality of your individual fish: you may get lucky, or you may not.
I think Oscar, JD, severum/Chocolate has a good chance of working. Goldsaum/Green terror is a possibility as well but a little bit riskier.
I would like a stock like that but I don't think I will be that lucky, the last jd I had killed 3 silver dollars a couple hours after I got himI have a 4x2 and run an fx4 and a small internal, the current stock is a 8 inch chocolate cichlid, 6 inch jack depsey, 5 inch green terror, 4 inch salvini, 3 inch texas, 3 inch lyonsi and 2 inch sajica. They are near fin perfect. Minimum aggression since i have had them (about 6 months). Granted i know i will need to thin the stock out over time but i have been very lucky with the lack of aggression so far.