silver bullet

With my new step bars on and 600 lbs of tool boxes in the bed, I need to know if just a leveling kit is required. I don't go 4 wheelin as fun but like to hunt and travel old log roads so to speak. I have the Z71 package LText cab 4x4 2007 (new body style) and would like opinions on lifts or leveling kits (2 or 3 " is enough) that don't effect the factory ride too much. It sure was nice to climb the hill last weekend in 4 wheel drive instead of walking up the old log road to my deer stand! Any help is appreciated. Thanks----Steve