The axle has surface rust mainly. The center section still have fluid in it to keep the gears from flash rusting. I would have to drain it for shipping. As for the brakes I would replace the calipers, I left them on to be used as cores. The rotors have very few miles on them and SHOULD be able to be cut and reused without any problems. As far as I know getting rotors cut is usually pretty cheap, new calipers well that depends on were you by them and if you get them with pads or without, in this case with is the better choice. I would have to go over it again but it shouldn't need anything other then the brakes and fresh fluid to be road worthy.
If your really interested in this and would like to save some on shipping I'm going to be in the Williamsburg area of Virginia from the 14th to the 21st of this month. I would be able to meet up to exchange with in a reasonable distance from there.