Long term I would get the 125 "package" for the 6ft length...that would give the best territorial space.
125 = JD and 2 parrots
55 = 2 parrots
OR
2 55's with 2 parrots each
the 75 for the JD alone
I can’t return the 75g seeing I bought it second hand. I’m now interested in starting over maybe cichlids just aren’t for me. Or I’m just attracted to larger ones. 4 BPs is too much for a 75?