It seems common that alot of people who applied offshore come to oz on a tourist visa to alleviate the separation during processing and Immi seem to accept this so it shouldn't be a problem getting him here for the wedding.
I wouldn't mention the job hunting though. This definitely goes against the premise of a tourist visa. Just bear in mind that job hunting on a tourist visa can be very difficult as your partner will have no idea how long the processing of the defacto visa will take so it would be difficult for an employer to take him.
Also once the defacto is granted it also a bit hard getting a job because a lot of companies will only take people with permanent residency for permanent roles. It all depends what industry he is in.
I wouldn't mention the job hunting though. This definitely goes against the premise of a tourist visa. Just bear in mind that job hunting on a tourist visa can be very difficult as your partner will have no idea how long the processing of the defacto visa will take so it would be difficult for an employer to take him.
Also once the defacto is granted it also a bit hard getting a job because a lot of companies will only take people with permanent residency for permanent roles. It all depends what industry he is in.