99 burb steering questions

[youhaveamonkey]

Ok gents, I am TOTALLY confused. Its a 99 gmc suburban. 135000 miles on it. I got new tires today. Told them that I wanted an alignment. They told me that my steering components were loose/ warn and needed replacement. I saw what they were talking about. Idler arm, pittman arm and the center link.

First real question: do you think I could do this myself? I am fairly mechanical, but have never done steering stuff before, any advice?

Second real question: My tires (front) are wearing on the outside edge-- that is why I got new tires. I thought that this was a camber (?) issue. Is this correctable with the steering parts? I don't think that is the case??

Anyway, THANK YOU ALL FOR THE INPUT!!!