A great deal can be explained by the fact that if Ron is in this situation, he must know that he has to do exactly as "Dumbledore" did in order for things to come out the way he wants.

The article does mention the Aberforth thing -- maybe meeting Aberforth Dumbledore, a man without a brother, in the past, is what *gives him the idea* of becoming Albus.

My primary problem with it is an aspect of 2) -- Ron and Dumbledore really aren't much alike in terms of characterization.