I saw today that you can hold two cards, but I'm fine with us switching off and only managing one. The only time I ever max out quarterlies is Warehouse and Restaurant, between 1 Freedom and 1 Disc (and whatever other bonuses pop up on other cards) I seem to be doing ok.
I cashed out all of his cashback and was ready to close the card, but he had a refund and got a $50 statement credit for referring me. I charged enough to use that up, which leaves a $1 credit when his statement closes (24th). I wasn't sure if I'd still be able to go in and get that if I close the card or if I lose it. It's $1, I'm not stressing over it lol Closing it is one less account I have to check each day since I'm a weirdo that checks each CC every day, keeps my spending in check.