I would do a lot of homework with regard to petrol availability on any "in land shortcuts" through western and central Australia as many areas do not cater for petrol vehicles.
You may benifit with a long range tank in that situation if petrol is going to be a problem in those areas.
I have not been across there so can not help you with accurate information
Enjoy your journey.
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"Seek the truth or bury you head in the sand, both require some digging"
Hi Brimhunter,
That sounds like a good plan. The best thing would be to get the latest Camps Book (camps 10 I think). That gives you all the information you need to plan your trip and will be right up to date on road conditions etc. If you have a smart phone, get the Wikicamps app as well. That way you can plan it all ahead.