We would like to travel Florence to Naples via the Italo high speed trains. We would like to buy early to take advantage of the advance purchase pricing. The hotel we are leaving is in Pisa, thus we need to purchase Pisa to Florence on a regional Trenitala train, which we are unable to do this far in advance. Having never connected trains in Italy, I ask you
Is it risky to connect regional Trenitalia trains with Italo? (If regional train is late causing us to miss the Italo train, etc). And if so is Trenitalia high speed a better option to buy early?
How much connection time is reasonable for this trip in Florence?