Hi Josie,
It sounds like you have quite a bit of travel to do! You may already know this, but I thought to mention the Patient Assisted Transport Schemes, which provide people living in rural areas with financial assistance towards the costs of travelling to, and staying near specialist medical services for treatment.
We have a fact sheet which contains information on the state and territory based schemes, if you're interested in finding out more.
All the best for the remaining weeks of radiotherapy.
Annie :)