Dividing up Characters

It's one of my favorite things to do, once I've gotten going and started to see how various personality types or psychological drives are being epitomized by characters in a story. So for the new novel, I see we have the following break down:

Rachel = Sensuality
Lucy = Violence
Truman = Reason
Will = "Thumos" (hard to translate, but something like drive, urge, or, indeed, "will" - which is how he got named last time)

Now, I'm a little worried that the two ladies are standing in for the more sinful urges, but I hope the resolution will make it clear that they are not just sinful - "they" being either the urges or the characters. If anything, the resolution of the story comes from the two female characters defining and standing up for themselves on their own terms, and not just in relation to the two male characters (who are in this story more passive and more in the role of observers).