You can get quite nice places for the $450 mark - they usually require a bond and if you offer several months up front they quite like that too. They will also ask for at least a couple of referees who can attest to your rent paying etc. As for somewhere to stay when you first arrive - you could try
Stayz - No 1 in Holiday Accommodation Rentals they are the site for short term lets. You can get a good idea of rentals in ACT on
allhomes.com.au & allclassifieds.com.au - it has a buy/sell/rent section.
All depends on what you want for your money as to where you should try and get a place. In terms of commuting, nowhere is very far from anywhere in ACT and a half hour commute is about as much as anyone really does - OK 40 minutes on a bad day! Be aware that Jerrabomberra is not ACT it is NSW and there are implications for schooling.
As for furniture - well, we came with nothing a long while ago so probably not the best people to ask but yes there are some good cheap furniture places Fantastic Furniture and Freedom Furniture are a couple that spring to mind. Fantastic do basic room deals so you get the whole package for a room quite cheaply. Unfortunately our nearest Ikea is close to Paramatta in Sydney! Fishwyck is the place to go!!!!
In your rental property you will have to pay power (could be c$300+ per quarter, all depending on what you use it for - hot water costs $$$ for example) You will also have to pay for landline phone, broadband if you need it, car costs - fuel going up towards $1.50 a litre at the moment. You dont have to pay rates or water/sewage as the landlord will pay them.
See you soon!!!!