Thankyou very much people. I am going to take my time with the house design as I don't want to shell out $250k on a house that doesn't quite have exactly what I want.
At the moment I'm thinking of focusing on getting this block for a decent price.
Also, did I mention the block is next door to my parents place?
They would keep a close eye on the building etc...
Is it pricey to consult with an architect? Can he look at designs of houses from builders that I like and change up certain things?