Wow, expensive stuff. Particularly when you add in the new road tax 40k list price penalty.
Funny also that the estate is faster than the hatch :-)
If were spending that money you would want Pretoria and would the larger brakes, tweaked spoiler and an increased speed limit that will never use be worth the difference from cost of taking the Pretoria as an option.
As for the exhaust, really like the tips, so it would be for the aesthetics opposed to anything the exhaust gives functionally.
Sometimes you are tempted by certain options, but not these at them prices, think a panoramic roof would be far better value for example if want to up your spend, though that £40k ceiling does loom large.
Of course there will be some where money is not a consideration and they can just select away, so I am talking from a perspective where you have to have a little think on what gives most bang for the extra buck.