You can afford it, but it depends on how you drive. If you listen in the garage every day, you can buy two calves, but if you go to the track every day, you'd better not buy them. You can't buy S65 or CLS63. If you drive to work every day, it will be great, but it will cost almost 10 million a year, so please think about it yourself.
4,000 W must be enough for two years, so I dare not say more.