Cake flavours and where to go?

Hey there. My fiancé and I are pretty set on our cake style, and the flavours we want. We’re wanting a boho decorated cake, and for the flavours, we want the bottom layer to be milk chocolate mud, next layer to be classic marble, next layer to be white chocolate mud, and the top layer to be dark chocolate mud.. We have no idea where to start or where to go. What cake makers would do this and what price would we be looking at? Around Sydney NSW