@LadyC @ninja-tim - similar situation with the kiddo. Contemplating one last hurrah (again) before #1 turns 2, but #2 is now on the way so feel like F (and potentially even J) would be a waste as she wouldn't be able to partake. Have you ever split the fam across cabins?
(for reference we did Y+ UA SYD-IAH a month ago, and by now it's just a distant memory, although at the time it was a bit of a challenge with sharing him across our laps for the stint). Y+ in UA definitely worth it for the legroom but that's for a different thread.