Dilemma:

Thursday afternoon:
EWR-HKG R0 - 11 seats unassigned in seatmap, J9, JN9, C8, D8, Z7, ZN7, P4

ORD-HKG R0 - 17 seats unassigned in the seatmap, J6, JN6, C2, D2, Z2, ZN2, P0, PN0

SFO-HKG R0 - 11 seats unassigned in the seatmap, J2, JN2, C2, D2, Z2, ZN2, P1

Wednesday afternoon:

EWR-HKG R space open -> That might be a bit too pushing for my schedule

My take is it may be a bit too risky for the SFO-HKG, so maybe the ORD-HKG and EWR-HKG are the best bet. Would you forget about the miles to secure the best possible upgrade? I regret that I didn't get this taken care of last weekend. Yesterday morning, R space was there, but afternoon, all gone. I believe the system sweep takes place sometime on Monday.