In the end, I decided that I was not going to waste the long weekend that I had put aside for the ride and decided to head up to Gunning via as much dirt as possible.
The basic gist of the ride was:
Mulligans Flat road
Marked Tree road
Collector Gunning road (Part of the Bicentennial National Trail)
And back was :
Yass River road
Dicks Creek road
All up it was approximately 180kms over 2 days and 2200m climbed.