If the PDF uploads, how does this specification look as a compromise to allow the 17's?
It looks quite good in all fairness, although make sure you look through what is included on Chilli and what you've not specified cause some of the fancy lights etc aren't standard - although you have specced the excitement pack so you should have the changeable ambient lighting.
The residual of your car will be significantly less without Chilli pack - I'm not too sure how that affects a company car deal?
Note: if you do decide to add the chilli pack it will add an additional £85 to the overall price taking it to £28,770.
Also I would definitely recommend H/K, I will simply never have another car that doesn't have a premium sound system fitted - you'll definitely not regret specifying that!