Most of the locations on this itinerary are within a 15-minute driving distance from each other. However, if you prefer to use public transportation, there are plenty of bus and train routes to Lynwood. The estimated travel cost for an Uber or Lyft ride would be around $40 for the day.
To add more to your day trip, you might consider visiting the Watts Towers Arts Center, the Los Angeles River Forest, or the Helen Keller Park. If you have less time, you may want to skip the medical center or the batting cages. Also, don't forget to wear comfortable walking shoes, bring some sunscreen, and have plenty of water and snacks with you.