I am sure you will find people to chat to along the way. We usually prefer to travel solo but often meet up with people that we have seen at a previous campsite or caravan park when we pull in to camp up. (We aren't on the road but stuck at home for a bit longer yet)
Don't forget that fruit, veges and honey are not allowed to be bought into WA. The quarantine guys are pretty thorough at Eucla.
Enjoy the trip across. There really is a lot to see out there.
Sue