Have 2 passengers apply for Alaska credit cards, which include an annual $100 companion pass; save some serious cash, earn AS miles for a future flight or FC upgrades.

It is possible to use the Chase URs earned with your Sapphire card for award flights on AS - simply convert them to BA Avios, redemption rate is better than AA, AS. It is also possible to use AA miles for AS awards. There are multiple threads describing the details.