In terms of transportation, we recommend renting a car since Paramount, California is not easily accessible by public transportation. If you choose to drive, expect up to a 45-minute drive from Los Angeles. Gas and parking will cost you around $15-20.
If you have more time, consider visiting Paramount Ranch or the Veterans Memorial Park. If you have less time, swap Hollydale Regional Park with a quick visit to the Long Beach Museum of Art or the Aquarium of the Pacific in Long Beach.