Competency can make life more comfortable, but not necessarily overall happier. Good middos is what truly makes a person happy.
Imagine a house that isn’t so up to snuff, but with a wife who truly makes you feel cherished and appreciated, who listens with her full ears and heart when you discuss things of concern to you and who truly wants and cares enough to do something about it.
Now imagine a wife (or husband) who’s got their act together, because that’s part of who they are, but when it comes to your values and concerns, if it conflicts with theirs, you can talk till you’re blue in the face.
I think a flexible and responsible person (someone who does what needs to be done) is important (second to kindness).
A person who follows through with commitments, whether it be to school, work, family, friends, etc, those are typically the people who will follow through on the things that come their way.
Regarding my post above, the most you can do is ask generalized questions on a date, and hope some of this info will be revealed.
I Also completely agree with the above poster who said that the way you treat your wife will impact greatly on the efforts she makes for you.