Prepping for the Canadian LoL run

As there aren’t a ton of Canadian options, it seems almost universally agreed that sabretooth with the Sasquatch synergy seems to be the best move forward. With that in mind, do I need to rank up any of the other 4* champs? Also, which path would you recommend?
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Starlord > Thor JF > Daredevil > Venompool > Dr strange > Kamala > Rocket > Maestro
I've heard suggestions of only doing MLLL with ST until you get the SP3, so you don't die to unlucky evades, this seems like good advice.
I think Guardian is #Canadian (he literally has the symbol of the flag on him) and he considerably has high damage too. Then why is that no one uses him for that challenge. Does Labyrinth have Damage caps? I thought no...