Leave it at two girls for now. If you want to add to your flock you must be prepared for any outcome. Two females and 1 male is no good, you could end up with a lot of problems. I would suggest before adding any more birds to your household and especially before breeding that you do a great deal of research as there are many things you need to be prepared for. For instance if you want to breed in 4 years and you have the birds now, 4 years from now the birds will be too old, not that they are unable to breed at that point but it is not suggested to breed older birds.There are many articles on the forum that will help you make an informed decision.