You will need

24/26in Chest - 4 Balls
28/30in Chest - 5 Balls
32/34in Chest - 6 Balls
36/38in Chest - 7 Balls
40/42in Chest - 8 Balls
44/46in Chest - 9 Balls

3.25mm and 4mm Needles
3.25mm Circular Needle
6 (6 : 6 : 6 : 7 : 7) Buttons