"A word of experience on BA 734's. You don't want the exit row. Those rows DON'T recline on the BA 737-400's. Note that on these aircraft, BA move the boundary between CE and WHY seatling a little like QF does, but can be back to about row 15 or beyond at times. So the seats in the forward WHY cabin are the same pitch as they use for CE, with the only diff being 2x3 vs 3x3 seating. So don't get sucked into the "may we have an exit row" question unless you want to sit bolt upright for the entire flight."
Some may not recline but the great amount of space you get really makes up for it. iirc, the 1st exit row (11) does not have reclining seats since there is an exit behind it , however the second exit row (12) does have reclining seats. Imo , row 12 is the best row of seats on the plane, followed by 11. Anything from rows 1-9 comes after that. Row 10 is, imo, the worst row since the seat in front of it can recline but row 10 seats have no recline.
On the flight that the QF WPs are taking , CE only extends back to about row 8 so the exits are nicely within the WHY cabin
Dave