I think maybe your emotions are just running a bit high, and the thought of only having the one way ticket and it's not a holiday but your life away from everyone must be scary. I fly out Monday and am panicking already! No matter how much planning etc you do nothing can prepare you for how you will really feel. However I have heard of so many people getting to OZ, and feeling that it isn't for them afterall. So they pack up spend a fortune going back to the UK. Then when they get back look around and remember why they left. They then end up spending more money going back to OZ again. I am not saying this is what you will do as only you know how you are feeling, but may be a short holiday back to the UK would be the answer first. Rather then shipping back your cats, etc and then regretting it.
Try not to feel down and depressed, try to be positive and think about the reasons why you left the UK. Those reasons are still going to be there when you get back. Good luck xx
