"Cast on 151 / 163 / 175 / 187 / 197 / 209 / 245 / 257 /267 / 279 stitches with 2,5 mm needle, and knit stockinette back and forth for 4 cm...."
Swatch swatch, I am supposed to have 22 stitches to 4" (10 cm) over stockinette on 3,5 mm needles (The 2,5 are for the hems only). With worsted weight? Hm. I have knitted this Dale Heilo on 4,5 mm's with 20 st / 4". My mother even has used a 5mm with it.
I am yet undecided which size I will choose - but it will not be the largest :-) Either the M or the L - this pattern ranges from 2 yars to XL, where the XL is 134 in the bust. My actual bust is somewhere around 107 cm, so 123 or 129 cm at the bust should be good. This is a buttoned cardigan, after all. (But I really dont want a whole foot of ease! I am SO over knitting sacks!)
Have a nice day