Have driven it - both ways.

Ummm.... there's rest stops along the way, with tables and chairs, but that's really the best of it. The plant life is the same pretty much the whole way across, but we did notice that the ants change every few hundred ks. There's roos and emus to watch for, there's RFDS landing areas (we called them pedestrian crossings ) and that's all you're looking at for your four days. As far as stops, there's a few big things - whale, oyster etc, and the telegraph station at Eucla. We stopped at every single point of interest as well as Christmas Lunch in Cessnock and a party in Cobar (driving from Syd) and still made it to Perth for the party we were going to on the 29th. And we were not hurrying.

I reckon you could do it. You're a smart and creative soul; you'll find ways to make this work. But yeah, it's a drive you only do once!