Best British Airways business class seats for a family?

I’ve booked reward flights for the family in Business Class with British Airways from Singapore to London and am trying to work out the best seats to select. We are two adults, a three year old and a four month old.
We can either choose the upper deck with a triangle of 3 seats in the middle, or the lower deck where there’s the four in the middle, where we can take the ‘couple seats’ in the middle and one seat in the aisle. Any suggestions?


If you haven’t already, you could refer to the following links below for some general advice: