Need some help, this has been driving me nuts so far, trying to plan this.

Would this be valid?

YWG-YUL-ZRH(stop)-IST(stop)-ICN OR NRT (turn around)

NRT(ICN)-AKL(stop)-LAX-YVR-YWG

Do I need to insert a FRA stopover between ZRH and IST?

Basically, we need to end up in AKL, and we don't plan on taking the rest of the trip back - we'll finish it a different way. That's the plan at the moment.

Looking for advice here, thank you in advance.