On the 77W I prefer the rear 2-4-2 configuration as the aisle is a bit wider there and there is easy access to rear lavatories without them being in your face (as well as rear galley - it's not a protected area jealously guarded by crew so don't worry about going there for a break/with your daughter to take pics).

However, the bassinet is the bassinet, so you might find that is more comfortable for a 12-hour flight (one of you might get some sleep!)