I'd try and make the J class day time flights.
Maybe spend a night in DXB if necessary. Could you do NCL-DXB one day, and then DXB-BKK the following day on the A380? J class on the A380 is fantastic.
Personally, I think it would be a waste to do a J flight overnight.... then again, you Geordies don't care when you drink
Cheers,
Rick