Towbar: include in factory fit or buy later?

About to order a factory new Mondeo and have the option of having the towbar (detachable) fitted as part of the order. (I believe Ford fit the Westfalia type). Initially this seems a good idea because everything, (dedicated wiring etc) is factory fitted thus minimising disruption to the car. Or should I have it fitted later when in possession. Any opinions please?

Incidently, I am going to buy the car via Autoebid, as promoted by the club.

Thanks.