For this pattern you will need:

Jacket

30" Chest - 3 100g Balls
32" Chest - 3 100g Balls
34" Chest - 4 100g Balls
36" Chest - 4 100g Balls
38" Chest - 5 100g Balls
40" Chest - 5 100g Balls
42" Chest - 6 100g Balls

Needles needed: 3.75, 4mm and a cable needle and 4 toggles.

Cape

30" Chest - 5 100g Balls
32" Chest - 5 100g Balls
34" Chest - 6 100g Balls
36" Chest - 6 100g Balls
38" Chest - 7 100g Balls
40" Chest - 7 100g Balls 
42" Chest - 8 100g Balls 

Needles needed: 4, 4.5mm and a cable needle.