How much is overdoing it? When they are suffering because of overpopulation, I reckon that's overdoing it.
This can be psychological stress, which can be helped by controlling or culling bullies, and making adequate separate options available regarding feed and water resources, nest boxes, perches, multiple roosting cages, etc...
Or it can be environmental stress, such as overload of parasites and diseases; this is vastly helped by using hydrated agricultural lime regularly (minimum once a year for overstocked ground) to sweeten the soil and break down diseases and parasite eggs.
It can be hard to control bullies if someone doesn't live there and watch them closely enough. Failing to be able to spot and remove or control bullies can result in a lot of stress, damage, possibly loss of life and lowered production, and ultimately, lots of work for you. Probably even some financial loss. Bullies are an issue many people underestimate. When your animals are friendly with one another, and their diet is sufficient, and the environmental pathogen and parasite burden is controlled, they have an extremely high tolerance for overpopulation. If these needs are not met, they can feel "overpopulated" with literally only two birds on the whole place.
Just like wild animals with their territorial aggression and loner-mentality being negated by a sudden excess of provision, i.e. food; they will get along just fine as long as their needs are met. I have a zero-tolerance policy for bullies and feed them kelp granules for complete nutrition, and give them a choice of roosting places. I also lime the ground regularly. Only in the middle of a prolonged drought did the very large population feel a little cramped, and green feed being supplemented fixed that.
Best wishes.