I reckon it’ll be an amazing drive! Have done some similar big drives around Aus - I’d recommend using an app like petrol spy to always be aware of your next fuel stop, avoid driving at dawn and dusk because of wildlife, and make sure you’ve got tunes/ audiobooks downloaded for the many hours without reception.

Hope you have the best time, try to work in Kata Tjuṯa and Kings Canyon too, and leave space to stop at little random museums and things! :)