I've spend a fair deal of time on this board but I can't figure out whether the following routing would be acceptable. Can I go to south america first and then do stopovers within the US? or does a flight change in MIA qualify as a stopover? Does this meet the two stopover in region of origin rule?Any advice would be appreciated on the following itinerary. Stopover points indicated (SO). Thanks

YYZ-MIA
MIA-GIG (SO)
GIG-MIA
MIA-MCO (SO)
FLL-EWR (SO)
JFK-HKG (SO)
HKG-BKK (SO)
BKK-SIN (SO)
SIN-FRA
FRA-HAM (SO)
HAM-LHR (SO)
LHR-YYZ