I'm getting a strong vibe of Soldier in the beginning, near the end I'm seeing more of a strong, quiet analytical sense of Black Mage.

In a way you kind of reminded me of my own application. I think you are more sensible in many ways, but I get this sense of being somewhat not so much of being restrained but finding this whole trying to convoy the inside voice with the outside voice thing a bit of a challenge. (Never mind that the inner voice tend to be on the scathing side). Not so much gloominess, but something that is easily perceived as being cold and unfeeling?

I think more so than anything, rather than our current class system you'd make a pretty good default Lightning. First you are a Commando, then you are a Ravenger. So that would be Soldier Black Mage, ya?

So in the end, I'm going for Soldier, just by a bit.