SamAustralia,
Was on course here with a guy of similar age to you. Had a interview before he even finished his course and is now accepted on to the 737. He was modular. Left a well paying stable job and took a gamble. He could not be happier. However this was in JAA land. Australia is not exactly the land of oppurtunity for pilots.
If you have a EU passport then I would say definatly look into it.
If you will be quite happy as a instructor in Aus then go for it.
Unfortunatly alot of expats don't like the middle east even though they choose to be there (must be a reason for it)... so I guess its up to the individual.
best of luck with it all.