We are a family of 4 traveling from PDX to LHR in WTP.

I’m struggling on the seat selection since this is our first time on this plane. I’m thinking about selecting 23 J/K and 24 J/K, to have windows for my kids, but concerned about potential lavatories noise since 24 is the last row in WTP.

Do you have any recommendations? Is it better to avoid row 24 J/K seats and select some from middle section? There are no other window section seats available.

Thanks!