Oldie SL

hello colleagues, I have the idea of getting myself a sl. bj so between 70-80. I intend to spend between 10,000 and 15,000 euros. my points: 1. general: I get something neat for this money (I hope, yes). my expectation is a technically good condition and can accept slight defects (scratcher, worn-out seats, etc.) 2. I am not a super screwdriver and need something reliable. but should not be an everyday car, only for the weekend 3. what can you do about it? motor recommend: 280er, 350er, 450er, 500er? i mean the bigger, the better ;-)), however, I would like to know which motor is “recommended” (reliability, maintenance, spare parts, consumption [due to relevance], etc.) 4. automatic or manual transmission (preferably would be automatic)? 5. how much km would be recommended at the most? 6. what does the situation regarding pagode look like??? I know, these are many points at once, but I would like to hear some expert opinions about it. Thank you in advance! Greetings, harley13