Looking for advice- Moderately remote 3 day hiking track

Hi all
Some friends and I are on a mission- to be able to survive for a week in the bush with only rudimentary tools, and no water or food other than what we can find in a sustainable and low impact manner. This is a long way off at the present, but we are looking to move towards it in a series of steps, the first being a three day hike on the coast with food, the challenge being to eat as little of it as possible.
The issue is we are struggling to find any track that is suitable. Ideally it would be coastal, reasonably remote and within a days travel from sydney. We are all reasonably fit and experienced hikers, so can anyone suggest anything?
Thanks very much!
Some friends and I are on a mission- to be able to survive for a week in the bush with only rudimentary tools, and no water or food other than what we can find in a sustainable and low impact manner. This is a long way off at the present, but we are looking to move towards it in a series of steps, the first being a three day hike on the coast with food, the challenge being to eat as little of it as possible.
The issue is we are struggling to find any track that is suitable. Ideally it would be coastal, reasonably remote and within a days travel from sydney. We are all reasonably fit and experienced hikers, so can anyone suggest anything?
Thanks very much!