I have almost enough points in 3 AP accounts to get three Asia 1 reward tickets in economy. I'd have to buy some more points to have enough to book them.

1) Is this a good idea or is there a better way?
2) Is this itinerary valid (I think it is, I'm using KVS)?

YOW-YHZ-YYT-LHR-NCE(stop)-ZRH-SIN(pot)-ICN(stop)-YYZ-YOW

thanks!