The OP is 50 SC's away from earning either 50,000 points, a partner gold card or valet parking vouchers. They are asking about reaching that to give his wife a partner gold card for when she travels on her on.
A partner gold card giving lounge access, priority, etc for someone who would travel without the main card holder at times would be very valuable and I think worth aiming for.
Ok fare enough if he is chasing the 50,000 points – less what its costs to earn them. As for his wife’s gold card, seriously I would just ask for one or consider taking business else ware. It sounds like he spends well with them so I would be surprised if they do not oblige.