Welcome to GA LOST (and tell everybody your name, XXXXX... LOL)!!!
While you might be interested in an 06-07 KJ or a 09 KK, might I suggest you think earlier and here is why:
The earliest 02 KJs came with a Dana 35C rear axle (a mixed blessing -- not as strong as the 8.25" but more aftermarket options), a 45RE transmission (a real light truck transmission), were an inch higher (pre-lowered) from factory, but came with rear drum breaks.
The later 02 models came with the Chrysler (Corporate) 8.25" axle (another mixed blessing because it is stronger than the D35C but does not have as much support), the 45RLE, were still an inch higher, but still had the rear drum breaks.
The early 03 KJs (what I consider to be the best compromise) have the 8.25" axle, the 45RLE, were still an inch higher, AND had disk breaks all around.
By late 03, they had changed the 45RLE to the 42RFE (minivan transmission), lowered the ride height because of Consumer Reports, and this would be the basic set-up, with the 8.25" rear and disk breaks for the rest of the KJs run through 2007.
The 2004 and 2005 are basically the same (mostly cosmetic sheet metal and plastic differences), but when you start getting in to 2006 and 2007 you start to see ABS and stability control systems being added that potentially have a negative impact when putting in traction aid devices (lockers, LSDs, etc.)
If you check the current Craig's List for Athens you see quire a number of 2002 - 03 KJs for sale right now. Some of them are even 4x4s. You might want to consider checking them out and crawling underneath to see what they have.
Anyway, welcome to Georgia LOST. And go introduce yourself to jhblackwell and stephenferris they are both on here and Athens local Jeepers (and other off-road vehicles too...)