If you must I would go with Toronto +4 and the Under 50. The side and total however go hand in hand with Toronto playing well. If they can't control BC's offense (best in the league) it may go Over with BC winning by double digits.
I will stick with my original prediction though and say Toronto will keep it close and most likely beat BC. Moneyline a decent option also. Game really a toss up.
gl
*ah will add this. This game is very similar to the Oakland/Tampa Bay Superbowl a couple years back. Oakland is BC while TB is Toronto. You do the math!