Instead of doubling worsted weight I’m using a bulky weight singles yarn from Uruguay. I dropped 2 needle sizes to account for the change and cast on for the large (if you think S, M, L, XL for the cast on recommendations) size hoping to end up with about the medium size. It seems to be working out, though I think I’ll have to stop at 3 1/2 repeats of the pattern plus 3 rows vice 4 repeats plus 3 rows. It’ll be fine and it’s looking lovely!