So the purchase was done last week and the soil, crushed rocks and coldstream toppings arrived yesterday (Kiddo would like to go on the record that it was she who helped to choose the coldstream bits for toppings).
The guys from Supersoil were nice enough to accommodate their delivery times and charge only once for the double-trip delivery. I had never seen so much dirt and stone in front of my door, let alone shovel and move it to the back of the house.