Gauge is for No. 9 needles. For No. 10 it is 11sts=3” and for No. 10 1/2 it is 7sts= 3”

You would need No. 9 needles only if you were making size 6-8.

You would need No. 10 1/2 needles only if you were making size 10-12.

You will need:

1 (2) 4 oz skeins each of dark red and pale rust
2 4 oz skeins of light rust
1 1 oz ball each of plum and peach
yarn needle
scissors