Ah, I figured out my costume.
I now have a fancy-looking (yet highly inexpensive), black mafioso suit. I've got a loose, pinstriped shirt, I'm gonna do something...eh...out of "my-ordinary" to my hair. Accessories: cigar, bling(s), sunglasses, and I've got a Capone-hat that I'm gonna spraypaint black.
Now guess what I'm gonna dress as? :P