Thanks for the link Cal, To be honest I think the wife got a little lost in the MBTTUK section so was reading quite a few negative comments and it panicked her as the the last thing we need is to uproot the kids and not find work. Think the wife would like everything to be a guarantee which obviously isn't going to happen.
Was looking at either Sydney or Brisbane areas but still not 100% sure, so many factors to consider.
its all just a bit daunting, so great to hear other peoples experiences