Hi Megan, I use the same exact printer! :) I'm not sure about the black ink smudges & honestly I have had lots of little hiccups with the printer. Although, I find the quality to be excellent when it's doing what it's supposed to.
As far as your color, did you put it in Adobe RGB mode in the print settings? I think the standard is Epson Vivid. It could be the paper too. I haven't used Hahnemuhle, however I'm sure it's good quality. Did you try the different photo paper settings under media type?