I moved away from instructing late last year. After close to 1100hr of teaching, I decided to follow a dream and chase an adventure. However, I moved from NZ to Africa. I can't answer your questions given that I've not been in the Aus market, but I can offer advice from my experience...
Be prepared to constantly defend your dream. A pilot with your total time turning up in an area where there is mostly 200hr newbies can seem suspicious.
Even if your credentials look great on paper, it could be harder than you think to land a job. Stay positive and never give up.
Don't be surprised if you find some very basic manoeuvres more difficult than you'd expect. How often as an instructor do you fly straight and level? (You in control, not watching someone else do it!). All that time in the right hand seat and my taxiing wasn't quite up to scratch either. Learn to laugh about it
Good luck!