The midrange is what is important...your wife will be happy..forget the subs they will screw up the sound...too slow and they will draw attention to themselves....not disappear.
That’s just silly advice from someone who’s never heard what good, well-integrated subs can do. Good subs properly set up disappear completely and do not draw attention to themselves, period. They also offer substantial benefits in imaging and expanding the soundstage in addition to filling in the missing lower octaves and improving dynamic capabilities. Personally I’d go with the Rythmik F12G for music, and you should absolutely consider adding a second sub down the road if at all possible as the benefits are very meaningful over using just one sub. Hope this helps, and best of luck.