Broken Hill
Grampians NP
Portland
Melbourne/Moorabbin
Sounds like a great trip Florian
I like visiting White Cliffs, just out of Broken Hill. Unique underground accommodation, and the publican - Graeme also does the refuelling! The pub is quite an experience.
Grampians NP, fly into either Stawell, or Hamilton, then hire a car. Last week we stayed at Dunkeld, about 30 minutes from Hamilton. Great food to be had at the Royal Mail Hotel. After all that eating there are some great walks to be had. Take care driving lots of kangaroos around.
Portland - we stayed at the Cape Nelson Lighthouse, about a 10 minute drive out of Portland, really nice apartment in the old lighthouse keepers cottage.
AND then fly along the Port Campbell NP - ie the 12 Apostles - check the fly neighbourly advice in the ERSA . I then usually fly along the coastline easterly to the Port Phillip Heads then track along inside the bay back to Moorabbin.
Safe flying
JERR