Maybe use a custom billet leveling kit from PRG. $?, used in conjunction with the Total Chaos upper a-arm, (~$540). But if you can swing the ~$1000 for Fox or DRE adj. coil-overs too ...
His leveling kits are designed for the stock a-arms, so you can't go higher without running the risk of them hitting the coil buckets. Some people push it and grind the buckets.
Same thing if you add the Fox or DRE adj. hight coil-overs - with stock upper a-arms ~2" lift on a 4x4 and 2.5" on a 2wd.
With the TC a-arm you also gain maybe as much as 2" of travel too.