Yarn substitution question
I just downloaded a lovely pattern for lace curtains, but am unsure about how to go about substituting the yarn. I just moved to Seoul and haven't found knitting shops that carry the brands I'm used to. Also, the gauge in the pattern is measuring post-blocking so I'm not sure what to do...
The yarn in the pattern is Silk City Fiber 3/2 perle cotton, and the gauge is 16 sts and 28 rows = 4” (10 cm) in Main Body pattern,
blocked. 20 sts and 40 rows = 4” (10 cm) in Edging pattern. 26
sts and 32 rows = 4” (10 cm) in St st on smaller needles.
Ideas? Should anything the same material and weight work out alright? Since they're curtains, it shouldn't be a huge deal if the gauge is off...right?