Have you got
DSC, LSD and the MFSW ..is that just part of spec you've not listed ?
Personally I'd dumped out the satnav, you'll get something that works better for £250 and will be more easily upgradeable that the built in one. Yes, it does look better...but it really is silly ££. And personally if I was buying 2nd hand mini I would not pay £1 more for a car with satnav than without. Why not remove and get the stage 1 tuning kit...much better way to spend your ££ (all my opinion mind)
JCW aero kit is great...I love mine.