Itinerary Suggestions Please?

If you have not seen Lake Eyre with water you should plan to do so. Opportunities don't come often.
I would suggest via Muloorina Station.
lakeeyreyc
And if the budget is OK, take a flight over it from William Creek.
Watch this as you get closer......
SA Outback Roads.
Come in from the North down the Oodnadatta Track and then south via the Flinders.
The wild flowers should be great.
Cheers,
Peter
OKA196 motorhome

If you haven't already....Wentworth to Renmark north of the river is a good trip.

Travelling down through Murray Sunset and then carrying onto into Big Desert NP and/or Ngarkat would be a nice way to drop a little further south..

You could head into Big Desert from Pinnaroo and spend a night at Blue Gums Campground (see your Place Entry, its lovely) before heading west into Ngarkat (or just continue on and do the "Border Track" down to Bordertown.. if you head into Ngarkat head over to the Baan Hill Track or Jimmy's Well Track and use one of those to drop further south with a view to getting down into the Coorong, so you can head into Meningie and then pick up the loop of land called Narrung, ferry back to the "mainland", then the ferry across the Murray at Wellington and then dropping down into Victor Harbor through Goolwa.

If you do Narrung (pleasant drive, take the time to google David Unaipon beforehand and take a look at a $50 note before you go).

If you are going via Renmark, then I would suggest you stay at Plush's Bend Camping Area. We were there about 3 years ago, just prior to all the flooding. There are about 10 camping areas that are within metres of the river. You have to book/pay for the site, there is a large sign as you enter giving details of how to book/pay for the site. We took a photo of the sign then drove in and found a great spot, then booked and paid for it over the internet.
Directions, head out of Renmark towards Adelaide on the Sturt Hway, turn left down 23rd St (immediately after the distillery), after a 1km veer left onto Plush's Bend Rd, follow this (1.5km) to river. There are drive in areas along the river, look for camping area number nailed to trees.
After pulling up it only took me 5 minutes to get 2 rods in the water, then I started setting up the camp site!!

Hi Guys,

Back in 2015, at the start of a Simpson Desert trip, we travelled from Mildura to Renmark on the Old Mail Road. This road follows the Murray River on the Victorian side of the river. There are numerous tracks off this road leading to the river. This road is listed on both Exploroz Traveller, and Hema. If the weather is wet, this road can be quite slippery.

First photo, I got “sucked” into a deep hole on the edge of the road after hitting a deep puddle, the road is actually at the right of the picture. Second photo is our first night camp site down a track off the Old Mail Road. This camp site is just down stream from Lock 9, you can access this spot from the Lock 9 access road.



Macca.

Howdy

Duncan2H has a good suggestion - have done most of that.
Yellow Gums and Blue Gums are nice and very accessible without having to do the Border Track, they're off the Murrayville Nhill road.
Red Bluff at the bottom of the Border Track isn't bad either but you are getting further south of Victor Harbor.
The Border Track is a days drive from Murrayville to Red Bluff with some nice sand hills and is currently damp due to rain so pretty easy going ( just got back yesterday from it )

You guys are also welcome to stay, camp and use the facilities at my place if you like - I'm on a few acres 6k's south from Murray Bridge.

Good luck and enjoy whatever option you choose

Cheers
Gazz