If you want to do pairs, I'd leave out the firemouth ... if you want to do singles, the cutteri, rainbow and firemouth should be fine.
Instead of a green or gold sev, I'd see if you can find a Turquoise ... even though they are now considered the same species as greens, at one point they were considered a differant species mainly becuase of the size differance in adults. Turquoise generrally are smaller than greens.
If going for pairs, I'd stick to one sev. If doing the 3 singles, two turquoise might work but probably only if they pair. Adults usually don't like each other very much of any type.
Instead of a green or gold sev, I'd see if you can find a Turquoise ... even though they are now considered the same species as greens, at one point they were considered a differant species mainly becuase of the size differance in adults. Turquoise generrally are smaller than greens.
If going for pairs, I'd stick to one sev. If doing the 3 singles, two turquoise might work but probably only if they pair. Adults usually don't like each other very much of any type.