Hi
I will also be doing a flip or two this year in WA (before xmas hopefully).
Although I haven't done it yet I figure I'm going to use a standard settlement agent (if you pm me I will give you the details of the one I use, they are very good at doing things that are different from the norm).
I really don't see it being much of a problem except for the fact that in my case I need to secure the buyer before I purchase the property to be flipped (this is a unque opportunatey).
Obviously there will be CGT, the buying and selling costs to take into account and the profit margin I am willing to take (my deals will be around the 100K mark so outlay will not be too much).
I wont be making over 50K so GST shouldn't be an issue.
I really don't think they are that hard.