Welcome to the CHR site also from me down under. I too will want to follow along with your build and I like your plan so far with using the flatty but as Dave mentioned,there is other options out there to be considered,eg., I adore and would really want a nailhead with 6 carbs in the old style truck.
You don't really need to look to far for another web site as this one is the best in the world for knowledge and friendly advice.