Other cards I have are CF, CFF, CSP, CIP. Is the CFU my best choice?
Did you consider opening a Chase Ink Unlimited? Right now you can get 75K bonus on $7.5K spend. The CIU also gives you the same 1.5 UR back as the CFU. You can also refer from any of the Ink Cards to the CIU so if you have the CIP you can have your wife apply with your referral or vice versa if it's the other way around.