Prepare before a solo road trip

Hey everyone I’m trying to make a solo road trip from melb to Adelaide and finally go to Perth.so before i start.what kind of necessary things that i have to prepare on my car.

My current vehicle is a Volvo xc90 diesel.but all of parts on these car are from factory.should i change the tyres to all-road ?and some ppl say you should prepare another bulk of engine oil to prevent .and maybe should i make a full service on my car before i move?

I think it’s the first time i make a road trip .so i don’t wanna let my car drop me on the road .hope i can get any useful tips from your guys