Is that 20,000 KM or 20,000 miles or a mixture of both?
What regular service history is there, oil changes, filters, plugs et cetera?
What maintenance has been carried out during ownership of the car? Replacing worn out & tired parts et cetera.
Also, i'm not sure if I am understanding the advert correctly but to me it reads that you are selling the car with faulty/broken electric folding mirrors, a dodgy alarm and a dodgy W58. For the car with these issues you would like 10K but you have a good R154 that you will sell for a further 2k? So 12K in total if the buyer wants a working gearbox?
Just host the photos with Photobucket and put the links in your OP.