Be cautious of AI as most of their planes are 2 3 2 in business outside of their older 747 and the 788. They also don't have a great J hard product seatwise.
For UA redemption I would look at some of the European carriers with a better hard product. Alternatively there is significantly better *A carriers going over the Pacific. I recently flew the extra 3 hours DEL/ORD via HkG and loved it.