Hi there,
I have nearly a similar case as yours except I never worked "jost got a license"
The difference between the prospective and the spouse is that in the prospective there is no period that you have to proove and if I remeber it is something like 12 months of being together but with the prospective you have 9 months to get married.
For work you will have no restriction at all but I believe that to work in Australia you will need to convert your license to an OZ one and you should be fine.
I think that most airlines require you to have a permanant residency status which you won't get for at least a couple of years "plus the waiting period for the process that I am in at the moment
"
Good luck and welcome to Australia