2. Any restrictions imposted by Camp LeJune should be visible on the appropriate navigation chart, and any updates will be available in the Notice to Mariners, which you'll use to update that chart.
1, 3 & 4 I can't help you with.
5. You mention a timeline of 3 days. I've read over and over on the forum, that a schedule is the first casualty on a sailboat. Just don't let yourself be pushed into wrong decisions because you feel that you "have" to be somewhere by a certain time.