Maybe it is only a bad joke known to HK people, but I would still recommend you to take 1A/K and have your wife specifically have "1A".

it is a rumor that the wife of CEO of HK, Mrs Tung, always need to sit in seat 1A regardless any condition. One time when she board the flight which her assistant cannot "secure" seat 1A for her, when she boarded the flight, she "demanded" the "1A" passenger to exchange the seat with her and saying "you know who I am, I am Mrs Tung, and this is always my seat..." ...

to the positive side, you can say to your wife: "I "demanded" HK's "first-lady's" "reserved" seat specially for you!!"

Have a great trip and hope you enjoy HKG.