The standard F Sport has cloth seat facings and leather look bolsters (look at the pic of the one at Leicester) which are heated. The optional perforated leather seats are heated and ventilated.
Parking sensors are standard, front and rear. Parking camera is standard with the basic media system, however with the Premium Nav you also get the guidelines that move with the steering wheel on the reversing camera.
The Premium Nav package has a slightly better audio system, Mark Levinson is a further upgrade on the Premium Nav.
I'd say the premium nav and leather seat options are worth having, ML stereo would depend how important audio is to you. The only other option available on the F Sport is the AVS adaptive suspension - most people don't feel this adds a great deal, okay if you can find a vehicle that happens to have it but I wouldn't pay extra.