Hi electricdave, congrats on beating Richard and myself reaching Cooktown. I also din't go further than Cape Tribulation...
If your car is pre-facelift I agree with Richard, adding a second charger would make life a little easier.
I just completed my trip from Bribie Island to NT border via the Outback and coming back via Normanton, Mount Surprise, Atherton and Cairns. In Atherton someone told me they saw a Tesla in Cooktown...the mystery is now cleared!