Ok, thanks alot for your help.
I will prob get the YHA card again aswel and just take both.
So now that you've mentioned it will be cooler in Sydney in July and stuff will it still be busy?
And will it still be busy in all the other places up the East Coast if we decide to work our way up to Cairns?
I have just spoke to one person (literally now) who has been around the same time and he said he wouldnt worry about it and just work your way up because there is still going to be loads of other backpackers.
Sorry if im ramblin :-)