Moderator, Air Canada; FlyerTalk Evangelist
Join Date: Feb 2015
Location: YYC
Programs: AC SE MM, FB Plat, WS Plat, BA Silver, DL GM, Marriott Plat, Hilton Gold, Accor Silver
Posts: 16,778
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Hard to say what exactly your chances of an eUp are.
As for other routes, check ac.com and only show fares eligible for eUp, that should give you a decent idea. There are LGA-YYZ-YVR with R space, so as an SE, you should be able to upgrade them even now.