spike 15

Hi Mate I am a qualified gas engineer, and i have a few qualification with regards to plumbing such as unvented hot water cylinder etc ,i am hoping to immigrate to perth, but im a little confused as to which is the better route to go down ,Gas or plumbing ? i have been working for a company for the last 12 years and as you know gas and plumbing go hand in hand here will it be better if i get my city and guild in plumbing over here before i get there or will time served be enough and i can just get a provisional licence when and if i get to auz and become a plumber /gas fitter any help will be much appreciated thanks mike