I would be concerned about the honeyeaters stressing out the koalas as well as contaminating their feed with feces. I also believe keeping two pairs of plovers together would be a bad idea due to territorial issues.What about 1.2 Queensland Koala, 1.2 Tammar Wallaby, 1.1 Australian Wood Duck, 2.2 Masked Lapwing, 1.1 Blue-faced Honeyeater?