If you're hellbent on the Park & Ride, go to Brentwood Station off Crowchild and Brisbois drive. But honestly, there's better & cheaper ways to park when going to the game.
I'm assuming there's going to be more than one of you going, so parking at the University is a good option. I'm not sure the exact costs...somewhere around $3.25-$3.75. That saves you on $2.25 fare per person per trip.
I'd normally suggest parking in the neighborhood off Crowchild and 24th Avenue, however, with the game on a Monday and it being during the day, even though it's a holiday, I would bet that the Parking Patrol will be out in full force.
Edit: Bronze, you're brilliant...but didn't come up with a better solution for the guy