Simple answer, call the airline and ask whether it's five across or six across in J. If the former, it's one of the "Club Empress" seats, similar to Executive First. If it's the latter, the seats are domestic style.

As for service, though, it will be domestic. Executive First service is only offered in J on overseas flights. Even though crossing the Pacific to HNL involves going over a lot of sea, it doesn't count in airline-speak.