Here is my intended itinerary. Perhaps someone will find it useful? I am sure I am not the first to do it this way, or the last. There is a FB group called Ride The Mawson Trail where I got some (hopefully) great information from several sources. Thanks folks! 

The plan is probably over ambitious (for me) but there we go. Dream big and all that. I have all the Heysen Trail huts bookmarked on my Maps.Me map should I need to mix it up along the way and for when my legs give out and I run out of energy drinks :-) 

If I do it in 7 days I will be surprised. Actually, if I do it at all I will be very happy and surprised ;-)  All I know is I have to be in Parachilna to get on the bus back on Friday 17th @ 7:50am. So, that is 10 days to do it. Will probably need to take a rest day or two somewhere. 

I will be sleeping in my tent and cooking my own food as much as possible though. Just because I am a tight-arse and a bit old fashioned like that. I was debating between tent or the huts & bivvy bag thing... 

The Itinerary

Day 1 Tues 7th : Tanunda to Kapunda (30k) to Riverton (45k) [75k] to Auburn (20) [95k] to Clare (25) [110k]
Camp: Clare – Caravan park 8842 2724
OR  Tanunda to Kapunda (30k) to Riverton (45k) [75k] to Auburn (20) [95k] Camp Auburn Community Caravan Park 0417 550 781, Rising Sun hotel for meals. IGA

 Day 2  : Clare to Burra (42k) to Hallett (85k) [127k] (approx 770a/575d)Camp: Hallett railway Station. Lock combo is #5419 Hallett Convenience Store  08 8894 2078 M-F 8-5 S-S 9-2
OR Auburn to Clare (25k) to Burra [65k] to Camp Black Jack Hut (35k) [100k](770a/575d)   Bakery & IGA at Burra

Day 3  : Hallett to Spalding (45k) to Laura (80k) [125k]
Stay @ Laura C'park Phone 08 8663 2296 or 0448 118 348, camp $20 camp kitchen etc.  Laura IGA M-F 8.30-6, S-S 8.30-2  ICE CREAM FACTORY!
OR Day 3: Black Jack Hut to Hallett [60k] to Spalding (45k) [105k] or on to Camp Bundaleer Forrest Reserve (30k) [135k] (737a/799d)
Camp: Bundaleer Forrest Reserve or stay at Spalding hotel $70 or free camp if you eat there. Open 9-9, 8845 2006 Publican is Flecher.
Spalding IGA/general store, M-F 7-5, S-S 8-1 

Day 4   : Laura to Melrose (60k) to Willmington (33k)(600a/475d) [93]   ***Rail Trail from Melrose…Stay @ Beautiful Valley Caravan Park, Willmington   +61886675197 General Store/Public Toilets @ Willmington
Bang it out to Quorn if feeling good...(40k) [135k]
Stay Quorn Caravan Park,  8648 6206 or Criterion hotel single basic room $35, 8695 0444. Food good here and a reasonable price…
OR    Day 4: Spalding to Laura [80k] (240a/275d)
OR Bundaleer Forrest Reserve to Laura (40k) to Melrose (60k) [100k]

  ***Hope to be in Laura (at worst) or Melrose/Willmington or Quorn (at best)

 Day 5 : Quorn to Craddock (84k) to Hawker (26k) [110] if banged out the previous day...A leg of long, flat roads...last 25km Craddock to Hawker is flat slog on a dead straight dirt road...
No water from Quorn to Craddock so fill up.
***Road: Hawker to Willmington = 102k (157k on MT)
OR Day 5: Willmington to Quorn (40) to Craddock (84) [124]
Stay @ Cradock hotel from $75 or free camp when buying food (08) 8648 4107, open 11-11.

Day 6 : Hawker to Rawnsley Park [93k]
Mount Little Station - camping $15, showers toilets water 08 8648 4206 [75k]  Rawnsley Park Station: (+61) 08 8648 0008 Open 8-6
***Road: via Flinders Range Way is only 40k if raining etc.
OR   Day 6: Craddock to Hawker (26) to Rawnsley Park (via Morlana SD) (93) [120] (Check winds...Potentially Big Day...water required...)

Day 7 : Rawnsley Park to Wilpena (26k) to Blinman (67k NO TELSTRA) (Passing by Middlesight Water Hut etc.) [100k]
Blinman Hotel: +61886484867   Blinman General Store: M-F-S-S 8-4Angorichina Village Tel — (08) 8648 4842 camping is 15k down Parachilna Gorge from Blinman

Bus returns to Adelaide on Friday 17th from Parachilna - Prairie Hotel @ 07 55am