Medicals, misrepresentation and criminality records are the main reason one can be rejected so once your medicals is passed u still have 2 factors to pass which will I believe is in process.Y would they reject
So if you know very well you have a clean record with submitted PCC and no misrepresentation, you should be fine. There could be other reasons one can be denied though but these are the main ones, that could make it difficult to be approved.