As has been said, pretty much anyone can get a mortgage irrespctive of credit history, its just a sliding scale of interest as they are taking a bigger risk and therefore want more profit in return.
Renting is fine till you are sure you want to settle somewhere. The problem I see is that even now house prices in Accy are so high it is near impossible for a single person to get a mortgage (you should base the amount you can borrow on no more than 4x your salary IMHO. based on houses being ~70K in anything like a decent area means you need a salary of ~18K which I know is more than a lot of young people earn.)
It proabably is worth you renting initially for a short period just to see if you really are domesticated enough to live on your own
seriously, people do underestimate all teh shopping/housework/bills/ etc that comes with running a house.