Great tips here. A buddy here is planning to lower his 2015 as well. We will start working on it right after we finished installing the Smittybilt parts on the current Jeep project.
How's the condition of battery cables? Sometimes they have tendency to degrade and make poor connection and current flow. Time to replace them if you haven't yet in long time.
Check Ion Wheels for gunmetal looks, they have great gunmetal finish around imo. I remember a previous neighbor who got the 186 on his FJCruiser and looks great.