Decided for third size (54“/135cm chest width) for a nicely oversized but not enormous fit. Body length 21“/52.5cm and regular sleeves. Followed the pattern in all points. It‘s well written and clear. For me, the sleeves end at the elbow but this is how I like it for a summer shirt, so I didn’t go for more length.
Overall a fast summer knit and I’m happy with my yarn choice, it still drapes nicely despite its airy consistence, used less than 200g! Very soft!