I'm contemplating an AC flight LAX-YUL-YTZ that gives 1:20 to clear customs (with a piece of checked luggage) and security. LAX flight arrives at 0710; YTZ flight departs are 0830 on a Wed morning in July. Although the MCT for YUL is 1:10, am I asking for trouble? I presume that, should I not make it, AC would rebook me on a later flight? A sanity check is appreciated.