Does anyone have the patience to help me with this? I've tried self help on the BA and oneworld websites but to no avail. I confess I haven't tried calling them yet, but hoping to get some guidance from some gracious flyertalker ...

This is the framework of an itinerary I need to arrange for Oct/Nov this year, in business:

origin/return from WAS (don't mind IAD, DCA or BWI)

first stop LON for a few days

second stop SIN for a few days

then, in no particular order at the moment, I need to make stops in SGN, BKK, PNH, KUL, PEK and maybe POM.

penultimate stop CGK before returning to WAS

What's the best way to do this? I tried the general RTW, but I see these various regional or limited continent options which look more applicable, but when I try a sample itinerary it kicks me out or says too many stops. Any input much appreciated, and bearing in mind I am a neophyte, any easy (non jargon) explanation of the system is really welcome.