Painted Desert Road - Options

I am interested to hear some ideas on visiting the Painted Desert.

We have a Prado D4D towing a Kimberley Karavan (2.1t).

Our current plan is to visit Northern Flinders then on to Maree and Oodnadatta track. We attempted this in May 2016 but the rain defeated us. This time we will be in the area in mid-late April.

Option 1. Maree - William Creek - Cooper Pedy and then a day trip ( not towing) through the Painted Desert.

Option 2. Maree - Oodnadatta- Painted Desert - Cooper Pedy.Bush camp somewhere in Painted Desert.

We have never been to this area so we have no idea ( apart from web searches) on what to expect. eg: anything of substance to see between William Creek and Oodnadatta.

We are fully self sufficient for many days. Have Satphone, EPIRB, spares, tools etc. Getting to these locations when we are based in Perth, creates a big distance overhead, so we really try hard to pack in the sites when we travel. In general we can’t be away from WA for more then 3 months at a time. Currently in Tasmania enjoying the weather(jeez the b....y wind).

Look forward to your suggestions.

Cheers John