Welcome to AA!
I have a Meyers and a Caique, 2 lovely parrots on their own, but they aint a great combination.
Meyers tend to be aggressive thowards others Birds, while Caique like to play rought.
I doesnt say that you cant have both, but not in same cage and most likely not out of the Cage at same time.
You need bigger cages, and the Caique need a pretty big One cuz they use Every inch of it.