I got a Cathay Pacific BOGO round-trip ticket from LAX to HKG
Flight#CX881 & CX882
Model Boeing 777-300ER

Seats 45A and 45B: I heard that the reclining angle of the seat back in this position is greatly restricted, and it is a bit crowded
Seats 46J and 46K: I don't know if there is a big restriction on the back of the chair in this position?

Or I should pick seats after row 60?
Any ideas would be really appreciated.