Number 3 is wrong. Pensacola was settled before St. Augustine but following a hurricane was almost entirely abandoned for just over a hundred years due to pressure from the areas native population.
Number 6 is questionable, the etymology of cracker is still debated. The Scots-Irish did use the word crack to mean a sort of idle chatting, like the kind you have in a pub. It could also be from the Spanish mockingly calling all the protestant settlers Quakers, or the sound of the thin Spanish whips used to drive cattle by the cattlemen of Florida.

Now as a former resident of Pensacola I have to take offense at the section that says St Augustine is the oldest permanent city. Pensacola was founded in 1559 by Don Trista de Luna. St Augustine was founded in 1565. Its just that a hurricane drove off nearly the entirity of Pensacola and it wasnt repopulated in a big way until 1561. A handful of people did stay though. Graves from this period of abandonment are down town. In a side note, the king and queen of Spain made an awesome guest appearance in the old part of the city for its 450th birthday last year.