We are posted to Townsville but my father is posted to Randwick and commutes to work, used to do it by train and bus which wasnt bad and now drives from Holsworthy. It doesnt take him too long. But being a CAPT you should get better housing opportunities and just try your best to work with DHA on the best housing solution for you. I havent had good dealings with Sydney DHA so I cant tell you how well it will go.

Good luck!!!