Edwardstown is quite industrial and as Anne B says has Main South Road running through it but only a couple of streets back will be nice quiet residential streets. (Always surprises me how quiet those side streets are). Renting may offer no problems but if you later on look to buy there have been issues with pollution from its industrial past. I would suggest you google the area to find out more.
As for areas, I would rent a furnished rental for the first few weeks when you get here, drive around and find areas you like before looking for something long term to avoid being stuck for 6-12 months in an area you don't like.