Has anything been filed?
You both live in Canada nad most people would not go the K1 route.
Either way you would interview at the Consulate and need a medical, if you do not complete the requirements then for a K1 you could enter and then go the Civil Surgeon in the US route, get an I 693 and file a waiver whilst seeking to adjust. If you go the marriage route then you file the waiver after the interview in Canada.