Site visit this winter

This winter I intend to drive out to the Challenger site.
The plan is to take the road to Commonwealth Hill Station;
Then north west in the desert.
The turnoff is north of Glendambo on the Stuart Highway SA.

Plan to return on the Mulgathing Road to the Trans Aust Rail then to Tarcoola, Kingoonya
and Port Augusta.

If anyone has been to the site by road, would appreciate tips.
Also would like to know location of "Haul Road" Tarcoola to Challenger.