Thanks BB,

Planning to do this in a few days. Which levelling material is my best choice:

Sands
Sydney / Newcastle sand Rendering, floor tiling, sandpits
White Bush sand Bricklaying
Yellow Bush sand Bricklaying
Coarse wash sand Under paving, making concrete
Nepean washed sand Under paving, making concrete
Fill sand General fill applications, under concrete slabs

Soils
Lawn Mix
35% Soil
45% River Sand
10% Chicken Manure
10% Premium Compost
Quailty Lawn mix for use as a top dress for established lawns or as a turf underlay for new lawns. Water well after laying
Turf Underlay 45% Screened Recycled Soil
45% River Sand
10% Ash
A free draining soil mix suitable for use under all turf varieties

I have around 250m2. So I assume around 2.5 tonnes to start with?

Cheers,

Adrian