Just to expand on what Andrew said above. The 6 month rule only applies to transfer of Pension funds and the rule is designed to put you in the same position as an ordinary austrlaian resident who is taxed at 15% on the earnings of their pension (superannuation) fund while in accumalation phase.
So it does not apply to your money from the sale of your home or savings.
By leaving funds in the UK you may incur taxes on the income earned and the exchange rate gain if the aussie dollar depreciates once you becoem a
PR. Best Advice is to go and see an Aussie Accoutant to look at your options. I always recommend Alan Collet at
Go Matilda - Your Gateway to Australia - Visa, Tax and Financial Planning for Australia as he is qualified both in the Uk and Australia.
best of luck ...i am off to book flights to Europe as this is the best it has ever been for those going on holidays from Australia!
Liam