Is this a valid routing? Which is best POT?

YVR-LAX
LAX-ICN (<24 hr overnight connection)
ICN-PEK (stop)

PEK-BKK (<24hr overnight connection)
BKK-MUC
MUC-FRA (stop)

FRA-ZRH
ZRH-YUL
YUL-YYZ (stop)

YYZ-YVR

Thanks in advance
Stephan