I wanted to know what other fish would go well with: 2 JDs, 1 Jag, and 1 Pleco. A JD and the Jag are both about 6''-7'', the other JD is about 3''-4''.
Large enough Bichir would be cool.
A Huge tinfoil would be a nice addition or some various loaches. Prob would be best
to go with large tame fish. You have aggressive fish taken care of already. So the addition of some calm larger community fish would prob be ideal.
a Red Tail Cat? seriously? that's what your going to suggest?
as far as cichlids go you could probably do a GT if you found a tough one, i personally would go with a med bichir like a delhezi or maybe even an ornate, or a school of spotted or barred silver dollars if you can find them