You will need

Waistcoat
32in Chest - 6 balls
34in Chest - 6 Balls
36in Chest - 7 Balls
38in Chest - 7 Balls
40in Chest - 8 Balls
42in Chest - 8 Balls

Cardigan
32in Chest - 8 Balls
34in Chest - 9 Balls
36in Chest - 10 balls
38in Chest - 10 Balls
40in Chest - 11 Balls
42in Chest - 12 Balls

5.5mm and 6.5mm Needles
7 (7 : 7 : 7 : 7 : 8) Buttons