I’m going to use my trusty US 1 needles for these, I think I get the best sock results with them.
CO 64, twisted rib for 12 rds. Increase to 72, start chart A.
OMG the instructions are a bit more confusing than they need to be! I was able to continue with my MC yarn to do the heel, no need to stop and start a new skein. After the heel I did need to restart MC with CC, but no big deal. Easier to do that than not. Super confused from the written portion for where to start the gusset, now I get it, just start chart B. Follow the chart, no confusion!