I have a 05 LJ with the DPG lift kit package, I have had it for 11+ years and for the most part am very happy with it. Here is what I like and what I don't particularly care for:
OME HD springs are awesome, they ride a little stiff but are way better than stock and the lift looks just right (IMHO) on an LJ with 285 75R16
The JKS 1 1/4" body lift is perfect for allowing a 1" MML, this makes everything line up much better and negates any chance of interference from the engine/trans/ etc. when the drive line is tilted
The JKS track bar (when I did mine no one even bothered messing with the back one) in the front is junk, their articulating joint at the frame end froze despite regular application of grease. I much prefer the Metalcloak track bar I now have
OME shocks (they have since changed dramatically) that came with my kit were junk, the right front blew within 3 months of being installed
The JKS sway bar disconnects are ok, nothing spectacular and they have tended to loosen up a few times at the sway bar end.......
An LJ does not have a double cardon joint in the rear drive shaft, but it does not have a slip yoke either. With this size lift you will not need to do anything to your drive shafts.
You can run stock control arms with issue, mine have 112,000 miles on them and I am just now looking at replacing them.......
Hope this helps.....