Sydney to Perth return via dirt

G'day all,

travelling from Sydney to Perth and back via dirt in Sept/Oct this year. I will be going through some country I have not driven before. I am not after the quickest routes as you can see but don't have rec leave on tap either, am hoping to do this in just under three weeks, then time in Perth and return.

used to driving long distances in a day outback but will have my whole mob with me this time so need to keep that in mind.

will be solo with a well set up off road trailer. i prefer to bush camp away from as many people as possible, wherever possible, so Yulara is looking a bit of a 'concern' (am aware of Curtain Springs.)

Am after any comments re distances/times/better options on the below itinerary.

thanks in advance.

1. BEROWRA to Willandra NP – 740 km, 10 hrs, camp at the creek.
2. WILLANDRA NP to Kinchega NP, 450 km, 6 hrs, camp at Lake Cawndilla
3. KINCHEGA NP
4. KINCHEGA NP to Woomera, 700 km, 8.5 hrs
5. WOOMERA to Painted Desert, 500 km, 6 hrs, camp at Ackaringa Homestead
6. PAINTED DESERT
7. PAINTED DESERT to Lambert Centre (via Oodnadatta/Mt Dare/Finke), 500 km, 8 hrs, camp at Lambert Centre.
8. LAMBERT CENTRE to Chambers Pillar (via Finke/Maryvale) 200 km, 5 hrs, camp at Chambers Pillar.
9. CHAMBERS PILLAR to Yulara (via Hugh River stock route) 400 km, 5 hrs, camp at Yulara?
10. ULURU/KATA TJUTA
11. YULARA to Warakurna, 336 km, 4 hrs, camp?
12. WARAKURNA to Tjukayirla, 480 km, 6 hrs, camp at Terhan Rockhole?
13. TJUKYIRLA to (Laverton is 311 km) Goongarrie Station, 610 km, 7 hrs, camp.
14. GOONGARRIE STATION to Holland Track (via Kalgoorlie/Coolgardie) ? km, ? hrs, camp on Holland Track..
15. HOLLAND TRACK
16. HOLLAND TRACK to Perth(via Hyden) ? km, ? hrs