... more:
I just decyphered the itn:
YYZ-YHZ-YUL-YYC-YVR-YYZ
Toronto-Halifax-Dorval-Calgary-Vancouver-Toronto.
That would work out just fine since they recon if you arrive with your trans-atlantic on YYZ you need to leave there also. I believe the rule is one can cross country once in each direction.
I guess for max miles one should go like north and south a lot also. What southeren US cities does AC fly to?