Good luck to your son, it sounds like you have helped him start out well. Don't think of it as he's moving out, think of it as expanding your search radius for games. Now you have someone in Dallas that can go take a quick look at a deal.
This looks like a good reason to go for quick visits: https://pinside.com/pinball/map/where-to-play/10116-bishop-cidercade-dallas-tx