for suspension, consider running some 83-85 toy front leafs. they are i think an inch shorter than yjs, if not the same, and a much higher spring rate. i had a set of 4" lift that were slightly used, and they matched the height of the 2.5 ome's i had in front. used them to replace the ome's in back. way to soft, killed them on the way to moab with my week long camping load. those toy springs can be found used for very cheap, or new and cheap as well. i would run some yj's up front, without missing links for stability. but run 6 leafs. get em from trailtough.com for $89 a piece. stock height.
for traction aids. if you are planning on staying with zuk axles, a guy here in colorado is working on making a cable locker for the rear sami. he is on zukikrawlers.com, goes by geckocycles. here is the link,
http://www.zukikrawlers.com/showthread.php?t=39814. it is in the last couple pages. he does awesome work, contact him if interested. otherwise, i would run toys or d44's. the d44's will help with center of gravity for sure. and both have options for selectable lockers.
good luck
joe