OK, here is what I'd like to do so far:
CMB-HKG-JFK(stop)-YVR in CX F <-- this is pretty much the only thing I don't want to change as I'd like to do the JFK-YVR leg for free at some point)*
If I were to fly EWR-SIN in SQ F what should the middle of my itin be?
SIN for a 2-3 days then...?
Ranking CNX, PVG, HKG, BKK, HKT which fits best with the above?
*If I did change, I'd change the whole itin to *A, and use the "free one way" to HNL at some point.