I plan on getting three pairs of cichlids; Amphilophus chancho, Amphilophus lyonsi, and Parachromis Loisellei. I want to put the chancho in a 150 tall (4'x2' footprint) and I want to put the lyonsi and Loisellei pairs together in a 125 (6'x1.5' footprint). Is there any reason this won't work? I don't plan on having any tankmates. Thank you for your input.