Booked another one. Finally, I am maximising, heh.
Outbound:
DEL-IST-FRA, overnight, FRA-PHL-YUL
Return:
YUL-LGA, JFK-WAW-LED, stop, LED-CPH-ZRH-SIN.
Return is under MPM5 by 68 miles
Surprisingly, only took 20 mins on the phone with the agent - once I convinced him that the return was completely within the rules, he had no trouble with it and quickly input all the flights. Of course, it didn't autoprice, so am waiting for YQ/taxes; shouldn't be TOO bad since the only YQ flights are the LO one and a transborder AC.