Help/advice in planning a route to S.W. Italy please!

[MJK 24]

I'm driving down to Sorrento this time next week. I've driven on the continent and in America many times and I drive for a living so I've no problems with long distances or driving on the 'wrong' side of the road! However, that's always been in a hire car and as Italy appears to be the most expensive country in the whole wide world to hire a car, I decided I'll be driving down!

I'm planning to leave Liverpool on Saturday 26 July, late afternoon.

I'm booked into my hotel in Sorrento Tuesday 29 July and check out Monday 4 August.

I need to be back in Liverpool no later than Friday 8 August.

Can anyone help me with an interesting route, places to stop and see there and back etc?

I'm happy to cover a lot of ground in a day! I did 1,251miles one tiring day last summer!!

Any advice would be much appreciated! Thank you