Be forewarned, though, that the C class hard product on the LAX-HND flights is OLD. I flew on it last year and it is obviously the international business product of 10 years ago...

Here's a link to what the seats look like.

Also, the nighttime departure means that you only really get one full meal. They will give you a snack if you want one an hour or so after takeoff, but the full meal is only towards the end of the flight. I believe this is because they expect most people to fall asleep.

All in all, for me, it would definitely not be worth it. Especially since you already have a premium economy seat.

-S