What do you think about my PAC as an 18 student?

Hi, i live in italy and after finishing highschool i'll start studying computer engineering in IT (the uni we'll be paid by my parents). When i'll start studying, after working this summer, i'll have a decent amount saved (around 16/18k) and i wanna start investing them from now on. The idea is dividing my PAC of 100€/m for the next 3-5/10y like this:
–FTSE VANGUARD ALL WOLRD: 55€
–Bitcoin: 25€ (i have faith in it and always have)
–iShares Physical Gold USD: 20€
(i'll be using trade republic as a broker)