Daniel, yeah, it's pretty straight forward process. It does look like you have some serious rust. But, in my opinion, you should be able to clean it up pretty good with a wire brush chucked in a drill or air powered die grinder. After I cleaned mine, I got some quality caliper paint, painted them, and the bracket also. After paint cured, I put the new seals and cleaned up piston in the calipers,
Installed everything, and blead the brakes. Ta da!
Daniel, this isn't exactly like our calipers, but pretty close, and gives you an ideA what I'm talking about. The biggest difference with ours is that the dust boot fits in a groove, And is held in with a wire ring....kind of like a big circle clip. This guy in the video uses a hand held wire brush, I used an air powered die grinder with a soft wire brush in it.
http://m.youtube.com/watch?v=cRUOChic7bc
Hope this helps.... There's not much to it, and no black magic involved!