First car purchase for 2 novices

Hello! I will soon be 18. My mother will be 48. We will probably receive the driver’s license in a few weeks, so the first car purchase is due. The ideal solution would be a (min.) 2+2 seater coupé convertible with metal cover. But all the cars that we both like are either 2-seaters or US-cars. What’s important about the car: -safety -place for at least 2 people -the monthly cost -price should be about 800€ -possibly convertible currently to the selection: -Nissan 350Z -Porsche Boxter -Mazda Mx-5 -Peugot xxxCC Problem in the whole thing: Except for the Peugot everything is 2-seater. Since my mother is working in the social field and I would also have instruments to drive, that is not really ideal. The Peugot is then too feminine for my taste. Does someone know novice cars (replacement parts,repair), which are fun (performance, coupé convertible) and at least 2+2 seats?