To close the loop, I ordered McGard #64010 sized 1/2"-20 off Amazon. While I was at it, I ordered a Tektron 3/4" impact deep socket and a 5" extension socket as I found out that to properly torque the lugnuts to 110#, I needed some clearance from the wheels. I can strongly recommend the large Home Depot Husky torque wrench from a quality standpoint plus it was reasonably priced.
SOme photos below of what these factory lugnuts are actually composed of. You can see there is a cheap metal shell that contacts the cheap steel short lugnut below. Also, if you are getting a set of tools for the first time, all you need is a 4-way and put some reflective tape on the end that fits your wheel. The tape will help you find the 4-way when you drop it in the mud in the dark.