You are spending too much. Most of the your projects are hideously expensive. And Italy wasn't a rich nation at all.
As for the foreign investments, who exactly is going to invest so much in Italy? There aren't large amount of natural resources to exploit.
Besides a protezionistic policy could help the fledging italian industry. On the other hand you have also a large public debt to adress... not an easy choice...
I was thinking an Italo-Prussia foreign investment exchange, to some degree. be it in stocks and bonds, Italian companies, etc.? Any thing you can suggest we have Italy do to make money? and do you mean protectionist policy?
Also, what natural resources does the south have that we can exploit? I heard steel is one?