CA Cichlid kind of guy so unless I could keep them in the 300g with a pair or two, I would pass on them personally. Wouldn't mind see a pic of each of the tanks as they are now. The 300g has a large enough foot print to where you might be able to have two pairs without it being an issue.
Sure thing, here you are sir (these are the last pics I shot, stock has moved since then). I don't have a pic of the other 55 gallon, it's black back and and bare bottom for now.
55 Gallon:
120 Gallon
250 Gallon:
300 Gallon: