Pro: 1) do everything in one setup and it will less likely to have a mistake. you can do pretty much almost everything compare to lathe and mill. 2)pay 1 oparator instead 2. 3)less time wait time, machine all at one machine intead wait.. while the other one is running. 4)less space, specially in euroupe the rent is expense and space is not that roomy.
Cons: 1)pricey 2)need to buy a cad/cam support it 3)harder to find worker know how.... program and run machine 4)interfee space, if you have a big piece..... machine won't have enough space.
Other than that go for it.
The best way to learn is trial error.