No. Keep going with this. Tell the truth.
SA getting second scenery pack is optimal scenario with something like mountain animal pack (or birds

) approaching.
Mountain Animal Pack can feature 2-3 andean animals such bear, viscacha, red howler, helmeted curassow, puna rhea and such followed by SA pack with obviously 5 animals. In this scenario South America gets 7-8 animals, new scenery set, lots of new plants, and even 2 monkeys in a row if red howler.
Compare it to any SA animal pack with given 8 animals and probably nothing more coming from Mountain Pack or anything else than single species, presumably bear.
So ya, 7-8 animals, new scenery set, 5+ plant species, possibility of more monkeys and birds > 8-9 animals, nothing else