Reckon you have two broad options: 1. Over the Great Divide e.g. to Omeo, then either via Bright and Myrtleford, or Mt Beauty and Dederang. Should be pretty in autumn, unless there are late bushfires. These routes are steep and winding in places, with some steep downhill sections, and I am not sure if the Falls Creek way is all sealed?
Option 2 is longer but flatter and easier driving: Princes Highway to Eastlink, to Ringwood, then Lilydale, Yea, and north via either Seymour or Maindample, to Wangaratta, then Beechworth.
I am Back..... thanks for all the info so far, Swan Reach in Gippsland is the place we are going from...we think at this stage we will do the trip over Omeo to Bright ,but will keep watching this space .
Reg and Lynn