Sounds like a fantastic car, and well done for going for such a non-standard colour. You will not regret it.

I second comments about the rear wiper - even here in rainy London I have never regretted not ticking that box. You simply do not need it. The rear window seems to clear itself at speeds of about 30mph, so unless you are planning on not going any faster , don't bother!

If I had my time again, I wouldn't spec the Bose and spend the money on some aftermarket set up. IMO the Bose sucks.