I did a three day a year or so ago in a 172 from Camden
Day 1 - Comeroo (already mentioned)
Day 2 - Lunch Hungerford (also mentioned)
Overnight Tilpa (excellent strip and nice old pub)
Day 3 - YSCN via Cobar
Did a four day coastal trip too -
Merimbula (lunch)
Great Lakes AP, Lakes Entrance (overnight)
Tyabb (lunch) - via Wilsons Promontory
Warrnabool (overnight) - via Great Ocean Road and 12 apostles
Milawa (overnight) Lunch at Brown Bros winery, dinner at pub.
Wagga then Camden
Superb scenery on this trip