Looks are not everythin, though i think he looks ever so cute............If he is from a good breder he will probably catch up and be as hansome as all the other littermates at catch-up time.
However our rescue Zacky was a very badly bred newf and had a lot of conformation faults, such as jaw line, up turned tail and a few other things. But he was such a darling and amazing dog, that i will always feel privileged to have owned him. I know that it is important that breeders strive for the best looks and conformation with good character. And I fully support that in every-way, but if there are a few newfies who are not perfect, they will be great in many other ways. But it sounds like yours comes from a good breeder, so Gilligan will most likely catch up.
Congratulations..........If you have formed that special need for him and clicked, you will have a great time owning your new newfie
Ronnie