Support networks are also taken into consideration. Have you got family etc where you are? What about interstate?
Get involved in as much as possible in your community/school etc. make sure you have the kids enrolled in activities/sports etc.
Make sure you have an established doctor and health support system.
You could even get advice from a psychologist to say that a move for either you or the children would be traumatic and upsetting.
Stay in your job and keep studying! A move would be incredibly disruptive for both these things.
All these sorts of things can be used as evidence against a recovery order.
Also start a diary! Detail every bit of contact he has with the kids and you.
Backdate it as far as you can remember.