There are a lot of choices and things to consider. Older games will require work to mantain so if you enjoy that aspect, older games might be a good start. On the other hand, they are not nearly as flashy as some of the newer games so kids may get bored quick.

Since you sound new to pin ownership and want to get the wife and kids involved, I would suggest Dialed In. My daughter and her friends have a blast playing it and go nuts when it starts snapping photos or emojis start popping up. Its a great game, built very solid and fun for everyone. My wife, who does not typically play pinball has really enjoyed playing it as well.

Good luck and I hope you find a great game you all enjoy.