How old is this boy? If he is in a southern shelter and is over a year old, there is a very good chance he may have heartworms. Heartworm treatment estimates in Ontario start at $900 and go up. Just something to keep in mind.
How long are you prepared to work with him if he's not an instant good fit? Can you keep him separated from your other dogs should the need arise?
Are you well connected with local rescues should you need to rehome him? Will you stand behind him and take him back if a placement you make does not work out? How will you check out prospective homes if you need to place him? Are you prepared to have a contract with that home?
Not trying to discourage you, but these are all things you need to think about. I have done a long distance adoption myself which worked out well, but all these things were under discussion when we took the plunge.
How long are you prepared to work with him if he's not an instant good fit? Can you keep him separated from your other dogs should the need arise?
Are you well connected with local rescues should you need to rehome him? Will you stand behind him and take him back if a placement you make does not work out? How will you check out prospective homes if you need to place him? Are you prepared to have a contract with that home?
Not trying to discourage you, but these are all things you need to think about. I have done a long distance adoption myself which worked out well, but all these things were under discussion when we took the plunge.