Na that is a great price! You've got the bigger screen too in that and 19s. My friend's been trying to find a good first car (he's a pilot) and i got him to choose a 5 series over an A4 (thank God). I've been trying to source him an M Sport 525D with the larger screen nav and 13.5k is impossible. He wanted his budget to be around 12-14k at the most and we're having a hard time right now. So now I've told him lets just get you a 520d and remap it
SLKs are tiny, that should have at least tried to keep up, a shame he couldn't
Na, let me not take anything away from you, the 530D is a great buy! And yeah, looks like you've mostly got it all (with the exception of a pano roof)!
520D + remap should give around ~220hp which should be fine. Just enough to beat any C/E250. But the E60 525D was so much better, a real torquey motor. Its a shame they downsized from the I6 to a twin turbo I4 
Ah so that would most likely be sunderland? I'm from next door to bfd and leeds