R 107 as a day-to-day car?

I got into the R107 Convertible at the Classic Days. I’ve only driven new cars so far. I’m actually driving my current car only on the weekend, so the question arises for me if I need a car at all. A nice compromise for me would be a classic car. Hardly loses in value (maybe it even rises) and is also nice. Now my questions as an absolute classic car layman: Can you use the R107 as a everyday car if you only spend 1-3 days in the W Oche driving? Can one drive with it once a week only to the supermarket? Is such a car even recommended for a layman? What average cost do I have to reckon with per year (about 5000km)?