Note that October is late or shoulder season, and a few seasonal businesses may have started to close. Be careful about having the right bus and ferry schedules for your exact visit dates.
If you're not that interested in Renaissance art, it might be a good choice. Do you understand that Salerno, Sorrento, Positano, and Amalfi (the town ... you need to distinguish between Amalfi and Amalfi Coast!) all have different "personalities"? For example, Sorrento is a purpose-built postwar resort, although it is not a "beach town." Salerno has great access to Paestum and Pompeii, but is the anchor at the far end of the Amalfi Coast. It's a larger, workaday town that is not as "touristy" as the other mentioned towns. This whole area is a victim of its own success, and can be very crowded and congested from May to September, at least.
We did not get to Salerno, because it was so far from our Sorrento hotel. We had hoped to see the UNESCO WHS of Paestum, but had to give up the idea because of the travel time from Sorrento. (Be aware that you can almost certainly NOT fly home from Rome the same day you wake up anywhere on the AC, or even Sorrento.)
You may wish to use the Search box to learn more general facts about this section of Italy. Southern Italy has been short-changed by the central government for decades, so it is short on "infrastucture" like roads and transportation. There is basically only one two-lane road from Salerno to Sorrento, curvy and mountainous. The half-hourly busses (change in Amalfi) sometimes have to back up and take another shot at some of the sharper curves, delaying everyone.