Ok, I'll give on most points. I'm not a show breeder, but I'm just speaking from what I've read on this forum.
@Ann - Correcting ears at age 20 months is a major undertaking and not for the faint of heart. General consensus on this forum has been if you don't start before 8-10 months or earlier, don't bother. Are you suggesting different? (i.;e. once the ear cartilege starts maturing, its a losing battle)
And while it may be true that Canadian dogs get their championships early (and why that may be so, I don't know), I think its rare for any dog to start its show career past 1 years old in any jurisdiction.
My best advice is to get your pup assessed by other local breeders, including the breeder that you got your pup from as to his chances for conformation.
One final comment....I do not know how long you have had your pup. But most breeders will hold on to show contenders and only release them as companion pups when they believe they are not going to make show. And then normally, they would only release on the requirement to spay/neuter the dog.
Some breeders will hold onto a dog with excellent breeding lines in the hope that he/she still holds potential if not for show but for future breeding.
That being said, as Sheltiluver said, I would not give false hope here.
Best of luck to you. He's a beautiful boy for sure!