visiting for one day in September, best transportation and sights?

Hi! I'm going to SF for a conference at the end of September. I'm hoping to spend my last day, from hotel check out at 11(or even earlier) to my flight at 9pm, trying to see a city i've never been to. Google has given me the following list of things/places. Is ride share affordable or should I rent a car for that day?

• cable car to Lombard street, walk to waterfront
• lunch around pier 39/fisherman's warf/sea lions
• rideshare to crissy field or GG Overlook
• rideshare to alamo square park
• rideshare to Chinatown
• then return to hotel to grab bags and hop on BART to airport?

Also open to any recommendations you might have as well!