Any Info welcome

I’ve got 3 months’ leave from 1st May to end July and plan on taking my new motor home, an Applause 500 (Fiat Ducato 2.8) up thru’ the middle of the country. I would like to go up the Oodnadatta Track and have read some of the entries in your forum e.g. about tyres…my tyres are Firestone GV3000 and currently are at 74 pressure. Are my tyres going to withstand the rough journey and if so just how much pressure should I release for the track? Is there any other pertinent information I need to ride on this track?
At once stage I was seriously contemplating coming back via the Tanami Track but recently after all my calculations and information have decided that maybe I would be being foolhardy. I am reluctant to go totally up and down the Stuart Hwy as this seems to be a possible waste of time when there is so much to see so I have found another small diversion that of the Buntine Hwy and then onto the Buchanan Hwy. Is there any reason why I shouldn’t veer off the main highways to drive on these roads? That’s if they are open around end June, early July….
Any info Flinders Ranges, Yulara, Alice Springs, MacDonnell Ranges, Katherine Gorge, Kadaku, Darwin or anywhere in between would be gratefully received, even places I shouldn’t miss as I have never tried anything like this before and am a female travelling solo....

Thanking you in advance....
Westy

You’ll never, never know, if you never, never go!!