If the cars are shipped to FL in the second week or latest third week of March they will be received before March 31st.
Anything that is built in the last 2 weeks will be shipped to places that takes 2-3 days to deliver.
Anything built in the last week of the quarter will stay in California and surroundings.
So mostly anything that requires more than 2-3 days will need to be shipped the first two weeks of March. Unless the sale numbers for the quarter are met, but looks that it is not the case. Anything that miss the quarter deadline will be sent to next quarter which could mean May/June
Also consider that March 29 to 31 is usually a Holiday weekend wich means that deliveries might be affected.