I normally start my AONE3 RTW trips in TYO but mulling starting one in Europe for a change. Can the experts here please check that this is valid? I'm trying to maximise BA tier points but also enjoy comforts and places (particularly not wanting North American long flights in 2x2 seating just for TP/mile purposes).

OSL-xDOH-LHR-SFO-SNA-JFK-HKG-DPS-HKG-HND//NRT-HAN//HKG-LHR-xDOH-OSL

I think it is 15 segments including two surface ones (HND/NRT and HAN/HKG). Comments/advice/suggestions all welcome, thanks.

PS might park this one in Tokyo and start a new one from there. These things are fun!