Originally Posted by hairpeace
PVG - NRT - SIN - BKK - SIN - LHR - FRA - FCO - FRA - JFK - LAX - SBA - SFO - SEA - YVR - LAX - SIN - ICN - PVG
I took out Lisbon. I'm going with Ron777's suggestion of NH5 and connecting to SQ11 (thanks!).
I'm being very careful about stops in SIN - you say anything under 24 hours (like arriving at 18:00 on SQ997 on July 3rd and departing at 13:05 on SQ64 the next day) is fine?

Yes, you are fine for SQ997/SQ64. Afterall, it's less than 24 hours. Thus, it's not considered as stopover.
But, your total mileage is still not maximize. It's only about 35K, with the max RTW3 for 39K. See this
map