I will be in San Diego for 5 nights. On one of the days, I would like to take in Cabrillo National Monument, Rosecrans Cemetery, Old Point Loma Lighthouse, and Sunset Cliffs Park. What is a realistic plan? Will it take a half a day or a whole day to see this? Can I walk to and from or should we rent bicycles or will I need to hop on the next transit bus? We are staying at the Westin and plan on getting a Regional four day pass. I believe the Transit system is able to take us to the Cabrillo National Monument. Thanks in advance!!