meh i wouldnt go to turin just to visit stadium :D so in cocnlusion i would have 4-5 cities that i really want to visit then leave enough time to be spontaneous, if you stay in hostels you will meet a lot of cool people that you can travel with
k then forget turin :P especially since juve wont be playing anyway, for italy id rather do florence/venice, for partying greece and croatia's islands are lotsa fun and id still do budapest