I don't think the i7 is necessary; the i5-2500K does very well using AutoCAD 2012 (yay free student software!), and I've seen Z68 motherboards at the price of that H67 board.
The 560Ti is a good choice, and I believe AutoCAD may have some use for CUDA when rendering (don't quote me on that), so it will probably be more efficient than a comparable AMD card.
We also forgot a case. I'm assuming you don't want anything really flashy, since this won't be a gaming computer (correct me if I'm wrong). I think the best case for you would be the Antec 300 (not the Illusion model, unless you want LED fans), since it's a very sleek and simple case with good airflow. It's also really cheap (~$60).
I'd recommend G.Skill RAM simply because it's cheap and actually more reliable than some other brand name RAM. I'd recommend a solid 8GB 1333-1600MHz dual channel set, like this one (have 2 kits) and the one below it (on sale for literally a few more hours; get it if you can!!!). The speed difference won't impact your performance noticeably, but having run Autodesk programs I would definitely suggest 8GB RAM.