If that is your ultimate goal, then stay conservative. A rear locker with a mild lift and 32's would most likely get you wherever you want to go. It is unlikely you need to change gears (axles or transfer case). If you need a little more than that a front locker would be a good space to spend more money and 33's if you need a little more ground clearance.

A winch with the associated recovery equipment and you will be able to go and get out of anywhere. <img src="/forums/images/graemlins/smile.gif" alt="" />

A little less than a SAS swap, huh?

Take care,
Michael