A guide price for haggling is around £10,700 for a standard car at the moment according to the price guides.
I paid just over £11k for mine with the same spec (white, full stripes, bluetooth etc) bar the full leather as it seemed to expensive for what it is, plus i like the standard seats. I didn't give the chap much room to manuover, i simply told him the online quote and said match it or ill order online. We weighed it all up and it was within £100 so i went with the dealer. That was a year ago now so I would have thought you would get it a tad cheaper as its the out going model.
The price you have doesn't seem bad at all though with the leather seats, maybe there is room to squeeze another couple of hundred off
Try getting an online quote for comparison/bargaining.