I redeem Alaska miles for JL business from LAX-NRT-BKK with stopover in Japan for 10 days for travel at the end of December. The business class seat only available for LAX-NRT (11 hours flight) but the potion from HND-BKK (7 hours flight) is on economy.

Is it still worth it even if the HND-BKK business class never open up later? The different between business class and economy is 25K for one way ticket.

I just want to hear you guys opinion.