Imo its best to keep anzac home, they got a factory and so they can capture and contest money islands which keeps japan busy.
This leaves the US free to build combat units to attack the japanese fleet and clear a path for the anzac transports to be annoying.
You can place 3 units with anzac and have them attack the round after. Neither Japan or USA can do that. And UK-Pac is better served buying land only and assisting china and staying alive