I found two 2012 IS C's at a local dealer, which I believe are configured just as I would have ordered them. A IS250 C in Obsidian/Saddle and IS350 C in Nebula Gray/Black. Both have the Luxury Package, Nav, Zenon/LED headlights and windscreen.
Now is the time to go to the dealer and crunch numbers. I think that I would go for the 350 in the Nebula Gray.