Firstly, welcome to sunny canberra, its sunny, but cold.
Second, as stated it depends on which suburb, but I only hope your not moving to Kambah or you will pay through the roof for insurance (no offense to those living in Kambah)
Thirdly:
I actually heard the opposite, they are planning on getting rid of CTP and making it so that you can get your own third party which can work out a lot cheaper for some people and more for others, but in the end rego itself will be cheaper due to not paying CTP, apparently...