To my way of thinking, wanting to receive a greater number of francophones is more of a dream than a reality. If these francophones arrive in your province with their family, from whichever francophone country, and they only speak French, it is going to be extremely difficult for them to integrate and succeed. They are going to have to learn the second language. As for the children, it is certain that they will face assimilation one day or the next, if only because of their friends, even if they attend a French-language school.
To my mind, to say that a francophone community is going to manage to survive is a sort of myth. It would take more tools, services, employment possibilities in French for them to really be able to continue to develop in their language. Am I right? This isn't a criticism, it's just a fact.