I find my thinking, though obviously informed by Aquinas, to be more personalist. And my idea of the cardinal virtues is that the four of them are in a dynamic relationship, thus:
Fortitude, for example, is Justice when the going gets tough. In other words, you can't be just if you are not also brave.
And so with Temperance and Prudence. Excessive or insufficient acts do not work toward justice, and an ill-considered act, one undertaken without regard to likely consequences is as likely to end in injustice as in doing actual good.
And the other three virtues can be put through the same sort of 'calculus.' Fortitude without justice would be recklessness or stubbornness. Temperance without justice could lead to fastidiousness -- even to the kind of self-absorbed fussiness we see at some health-food stores.
And so on.
So, IMHO, once we get the ideas of articles like this one, it is also helpful to view the cardinal virtues using a sort of 'force-field' metaphor, in which each serves in a manner like that of the magnets in a particle accelerator -- directing and urging the flow of will.
Just a thought.