I wouldn't keep the top (for the reasons mod girl said, it makes you look bigger than you are). The color of the nude wedges isn't bad, but I think it prevents them from being a 10. You have other nude/tan shoes that I like better on you.
First, are all three of the black wedges equally comfortable?
I would take a look at these new shoes with the ones that you already have (just quickly looking back at your blog, I'm thinking nine west http://1.bp.blogspot.com/-hE3e.....40/004.JPG, MK greenwich bootie http://4.bp.blogspot.com/-p5p0.....00/205.JPG, DV for target http://4.bp.blogspot.com/-pPMS.....40/156.JPG, and DKNY http://3.bp.blogspot.com/-lGW4.....40/130.JPG). They aren't all black, and they aren't all wedges, but the shoes you own have some overlap with the new ones. So what I would think about is what's the benefit added of these new shoes. Are there events or outfits where your current collection doesn't cut it, and which of these new shoes will fill that need?
I'm not sure what the answer is, but I'm certain that with a bit of thinking (and perhaps trying on some different outfits) you will figure out what deserves a place in your closet!