That tires are pretty sweet. I thought about ordering those, but the BFG's were a little cheaper and my grandfather draws his retirement from BFG so I buy them when I can.
The 4-link is looking great. That's the beauty of a 4 link and coilovers. In a matter of minutes you can change ride height, spring rate and pinion angle. I love it. I am sitting at about +2 degrees pinion angle and have not even messed with it. I am also running 200 lb springs in it. They are a little stiff and will swap them out for 150's eventually and try them. What spring rate are you running or did I miss that?