PC Flyer
With regards to other ideas and on top of the replys you have received already, may I suggest that you try one (or all) of the pastoral companies that exist in NW Qld and remote NT.
I have personally worked for one and had a great time. Lots of life experiences and great flying (mainly low level).
I am not suggesting these companies for 17.5 hours C210 time but rather more like a 6-18 month period.
The companies I know operate a/c from C150 - C210. Some of them require a low level endorsement but would only ask you to get one if they were actually going to employ.
If you would like more I am happy to help