Very nice, good purchase matey
Odd you mention the 645, as the 335 was my original plan until I ended up with the V8. Oddly I don't find the E63 to feel that big on the roads, I'll have to have a look in a minute as to how mine compares with yours size-wise. Beautiful looking car though, that's a great colour combo you've gone for. I'd stick with the 17"s though, cheaper rubber and better handling to boot.
Edit: Mine's 8" longer, 3" wider, identical height, and 75kg heavier. Or that's what I tell the ladies, any way