Fly A350 on both directions. Books in J and earns 200% on M&M (~40k RDM/EQMs). It appears changes are free and cancelation for a nominal fee of €150.
Thai (TG) JRYEYIT
https://goo.gl/flights/c1JU
Code:
TRAVEL FROM LAST INTERNATIONAL STOPOVER MUST COMMENCE NO
LATER THAN 12 MONTHS AFTER DEPARTURE FROM FARE ORIGIN.
2 FREE STOPOVERS PERMITTED ON THE PRICING UNIT
1 IN BKK IN EACH DIRECTION.
VALID FOR TRAVEL COMMENCING ON/AFTER 05JAN 17 AND ON/
BEFORE 30APR 18.