manutd123 - see if you can get a further 'allowance' on top of the £2K
- offer to go shopping or simlar!
If you are buying the car outright then you will be aware only a very few options give you any financial return. I know that if you go M-sport then many buyers 'delete' the sport suspension for the reasons you indicate.
The nav option becomes an expectation from buyers on premium cars even if the 1st owener has to stump up for it as an option.
I was in a similar situation to you and took nav pro plus a couple of of other options up to about £37K list.
You got a good discount but you will do well to keep it with any future additions. Many forum members punt for big wheels and xenons but these are style features which may improve the vehicle looks but nothing else.
Keep us posted....