You will need

Long Sleeved 

32in Chest - 4 Balls
34in Chest - 5 Balls
36in Chest - 5 Balls
38in Chest - 5 Balls
40in Chest - 6 Balls
42in Chest - 6 Balls
44in Chest - 7 Balls

Short Sleeved 

32in Chest - 3 Balls
34in Chest - 3 Balls
36in Chest - 4 Balls
38in Chest - 4 Balls
40in Chest - 4 Balls
42in Chest - 5 Balls
44in Chest - 5 Balls

3.25mm and 4mm Needles
1 Button