as long as you understand and aware of the possible costs of owning a ferrari, i say go ahead and buy it, because you only live once, so buy what you want
buying a car isn't always about being 100% rational thats why people do things that doesn't make sense according to other people, but only that person will understand
i say do it and enjoy it, no matter what the costs, i am sure you will figure out a way to pay for everything if you want it enough