This was an order from my friend.
I used three yarns held together (all yarn on bobbins):
1) Mohair (unknown manufacturer, but pretty standard 100 g/1000 m)
2) Wool (unknown manufacturer, 100 g/1500 m)
3) Linen (Flax, 100 g/1800 m).
Used about 1700 m of each yarn.

If knitters want, I can make a pattern recipe and organize a KAL in my group.
Similar cardigans are here and here.