You will need

Cardigan
22in Chest - 4 Balls
24in Chest - 5 Balls
26in Chest - 6 Balls
28in Chest - 7 Balls
30in Chest - 7 Balls
32in Chest - 8 Balls

Waistcoat
22in Chest - 3 Balls
24in Chest - 3 Balls
26in Chest - 4 Balls
28in Chest - 5 Balls
30in Chest - 5 Balls
32in Chest - 6 Balls

8mm and 10mm Needles
1 Button