Went with SQ in the end in hope of an upgrade with KF miles (which I'll switch my Velocity miles for). Customer services confirmed upgrades available before i booked, and that whole trip would be 130,000 miles
So after booking, logged in and looked and upgrades are available for each leg, but they're gonna cost the earth :
BNE to SIN 140,250 KF miles!
SIN to HND 85,000 KF miles
HND to SIN 42,500 KF miles
SIN to BNE 140,250 KF miles
Total KF miles 408,000 (or 550,800 Velocity miles)
I will probably upgrade the HND to SIN leg on way home as its an overnight but can't justify the miles for the others
Kind of wish I had booked through Virgin now as was $100 or so cheaper (still both Flexi), and I would have got my 100% Plat bonus miles. On the plus side - apparently I can get two $40 vouchers at Changi which I can spend on duty free
