Thank you for all your comments and on that note I didn't really explain myself in the opening post , the plan was to come out in March 2016 have 3 weeks in Perth , Adelaide and possibly Sydney with a view to how we felt after that , and if we felt it was right for us we would then move quickly on sorting everything out ie renting our house out, giving up our business and finally moving with no pressure of a long stay and with us saying if it works it works and we stay if not we come back to the UK
she'll do the holiday but no more than that which I now feel would be a nightmare if I like it and she doesn't but she's not willing to try it longer term at all and that's where the problem lies really !