Thanks for the advice folks. A "cyberfriend" of mine from another forum is in-flight cabin staff for BA, and has very kindly agreed to call a friend in reservations, and flag my ticket for EE/bulkhead seating upon check-in.
And Bluejay, I opted to fly on BA98 and stay an extra day in London, as it kept the cost WAY down, compared to flying on the Sunday. Return flight is BA95 to YUL, with a short hop home to Ottawa.
Cheers,