Trip to Alice, then to broken hill...

Hi

my dad and I are thinking of taking off to Coober Pedy then To Alice springs, on the way back we are thinking of going toWoomera ,up to Maree, then down to Peterbrough then over to broken hill,then home eventually.. back to the south coast nsw...
we have a 2008 Jayco motor home (23ft) would like to know what the roads are like for this, and accomadation ie caravan parks along the way,
I gather Ularu and alice wil be kind of expensive, being toristy stuff...
any way would like your thoughts please

we are going to go to adelaide for a couple weeks to see family then up to alice from there , this will be in september - october..

thanks
milo