I sent you a PM. Keep in mind the country is roughly the size of the US, so don't try to do it all at once. Sydney is great for 3-4 nights as you can do some fun daytrips. I went to the Blue Mountains today on one. The ferry to Manly is great, also walking in the Botantical Gardens to get the view of both the bridge and opera house.
Tasmania is lovely and most people wish they had stayed longer, not shorter.
Think through what is the most important, than do those. You could easily just stay on the easterly coast for your whole trip and not run out of things to do.