Thanks like apples and oranges, those guys are all so different. Upton probably has the most upside of any of them, but I'd be shocked if he was a regular before 2006. Young and Kotchman have monster power, but that doesn't necessarily translate into MLB success. Kazmir is a great pitcher, but won't have any effect this year. The only one that could play this year is Marte, but he's probably the least talented of the bunch.
That being said, if I HAD to rank them, it would go like this: