That depends on yourself Pouria. If u wonna bag an almost definite entry, study hard for 2 months and then work on previous IMAT tests and choose Naples university. with an average score of 20, u should be able to do it. but my advice is not to rush it. do your best and go for a better university. if u wonna put ur life in medicine, do it properly. 

non Eu student visa procedure is after the admission or their must be pre enrolment

Salam, mishe bedoonam shoma chikar kardin? Mamnoon misham