Benos,
Given that you're Aussie, you could likely get on with Maldivian Air Taxi, and acquire time as co-pilot to do what you want with. Post 9-11, there are a number of operations faced with a Catch-22 for new hire pilots. I believe the 1000 hours floats represents Single otter or turbine single otter requirements.
MAT requires 1000 float 500 on the Twin Otter, for Captains.