Maintenance Porsche Boxster S

Hello, I bought a Porsche Boxster S two weeks ago (986, 7/2003). I now have some questions about care. I have already found a variety of tips, but would also like to ask your opinion. Deck: The cleaning was recommended here with a brush and clear water. For impregnation some take the BMW impregnation, other simple textile impregnations. Have you had experience with this? Rims: Which rim cleaning product do you use? Leather: I have Full leather finish (black) with raffled leather look. How do you like your leather? Last but not least, I want to throw out the spare wheel and add a tire spray. Can you recommend something to me? Ciao, Holger.