It would be dirt all the way to the CP/village, unsure of it condition but would not advise as road bike route. Good luck with your trip.
Do it mate, have a crack, report back.
I know of 1 Harley that went across the Gun Barrel highway, Eighty mile beach will be a walk in the park compared.
These blokes are kept busy this time of the year, good for a lift if it turns to shit.