I may have posted this already, but I hardly bother with Amazon for autoparts anymore. I find that Rockauto will often be about the same, or less, even with shipping, if I'm looking for a particular brand. Also Amazon seems to be filled with no-name resellers just marketing Chinese parts.
That sounds like a good idea. You only have to touch the suspension at the knuckle so you won't be doing any work over again. The only caveat might be the box. If you've got a good working box, I'd hold onto it. I hear of so many guys getting remans that just don't last, or are even bad out of the box. I bought a rebuilt AC Delco a few years ago, and I think that's were my steering slop is, the Pitman was replaced at the same time, and everything else, except the idler was replaced this summer.