17x9 should look great on that, but I wouldn't be going for such a wide tyre myself.
A bit of stretch on a low profile 215/225 would look good I'd say. I'd be surprised if a 245 would fit if properly low, especially at ET10.

Try using an online wheel fitment calculator, and you could also ask on the split rim building forum on Wheel Whores.

Liking the look of this though!