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I would drop the beauty light altogether. I don't like the additional, small sharp catchlight it creates in the eyes and I don't think you need that fill anyway. A shoot-thru umbrella blasts light everywhere so as I mentioned before, you often don't need much additional fill when working in a closed space. It sort of creates its own automatic fill, only needing some help from a reflector in some cases. Here I think not even that.
Don't be afraid of some shadows. Those are what gives the face some dimension. If you feel that the shadows are accentuating wrinkles and the like, move the umbrella closer to the subjects if you can. The diffuse light of the umbrella will fill those in.
You are shooting pretty low - particularly with those last test shots. Either raise the camera or lower the subjects.
Your lens is right on the edge of being too wide, particularly when you get close. If you can't use a longer lens (say, 50-85mm for your crop sensor), then it just makes it more important to get lined up properly with the face. A wider lens is going to enlarge the portions of the face closest to the lens. Keep that in mind.
As I said before, I think you are close with the last test shot you did without the beauty light. Here is that shot with some color balance and slight re-touching.
A beauty light is normally used as the main, by the way. I wouldn't recommend it in this case though since your home-made beauty light is pretty small, particularly if you are trying to cover two people. It is going to create a harsher light. You're fine with the umbrella IMO.
Regarding the glasses, there is no magic bullet. Angle of incidence = angle of reflection. Unfortunately my recommendation to get the umbrella close to the subjects is probably going to make this harder. If your objective is a portrait of you and your wife, I would recommend having the umbrella slightly on your side of the frame and you orient your head slightly toward your wife while keeping your eyes on the camera. That might be enough but you'll have to experiment. Worst case, you can take a shot with and without glasses and then do a little clone work in post.