Ok, so I got a little complicated on this one. Pulled the fire ring, put the grate right on the firebox, put the fire ring back on, and put a second grate (one where a side of it will fold up for access below) and pizza stone on top of it. Filled the firebox within an inch of first grate and fired it up to about 550. Pushed the pizza stone to the side so I could fold up the top grate, and put the ribeye on the bottom on to sear about an inch over the fire. Seared it about 45-60 seconds a side, pulled it, put the pizza stone on the bottom grate, and the steak on the top and let it finish indirect at 500 for about 6 minutes.
Pulled it, tossed a pad of butter on it while it was resting, and it was a perfect medium rare.