Good luck!

I hope all goes well for ya and hope it doesn't turn out to be TOO expensive of a job in the first weeks of owing a 7! They can get quite costly.
As someone put it to me once, these cars a like women. They'll never tell you whats wrong, they'll make you guess instead. They'll take gobs of cash, but if you give her what she wants, she'll make you one happy man!
As for the wheels? I don't know myself. I can put out an APB and ask for ya. If you wanted to take a risk, you might be able to find a set on eBay for a decent price. Although I don't recommend that because there might be cracks in the rim you can't see, which is never good. But you can usually search for rims within a certain milage of your home.
Anyways, hope all goes well and have fun with your new 7! I've enjoyed mine immensely and I believe it the best investment I've ever made!