Now you know why I stuck with a dana 60. It get's out of hand quickly. Good luck on whatever you choose. There's so much info on the net about these axles and swaps it shouldn't be too tough to do no matter what you decide. I relied heavily on pirate 4x4 when setting stuff up. They have some great tech articles on axles and setup for a 4x4. Great resource and a ton of people who set up rears and suspension in the forums.
http://www.pirate4x4.com/tech/
www.pirate4x4.com
Chris