Of all the special sporting events that have been held in Victoria in recent years/decades I would honestly rate a CFL game right near the bottom, BUT... the CFL is a peculiar product and if you hyped the event in the right way and actually made it "a special event" I think it could be a bigger deal than a regular season CFL game has any right to be. But methinks you would need to have at least enough temporary seating to get the venue to 20,000. Otherwise it wouldn't have that "special event" appeal.
You know, the event itself should be at least a couple of days, with live music and whatever else. Victoria Watcher can work out the details.