Italy - driving from Palermo (South) to Venice (North East)

[Lexual]

Hi... we're planning a 2 week trip for next June to travel through Italy, flying into Palermo and driving up through Naples, Rome, Florence and then Venice, probably stop at a couple of small villages in-between.

Has anyone done something similar? we're looking at a budget of around £1500 each.. car hire and fuel and flights are going to be around £400 each... accommodation £200 each (hostels) and the rest is spending money.

Would welcome any tips on what to see and what to avoid? great beaches? villages? 'must dos'? nice wine districts etc?

Thanks...