I understand that you're concerned about maintaining the value of your guitar, but guitars are meant to be played, not just stared at lovingly. If I were in your shoes, I'd consider whether the guitar means more to me personally or financially. If you don't plan on parting ways with it any time soon, you should certainly treat the guitar (and yourself as well!) to a new BKP. However, if you get the pickup wax potted and/or rewound, it's not exactly gonna be vintage anymore.