The weekend after your trip is Columbus Day, I'm betting lots of people are leaving the same weekend you are flying to make it a long vacation. Friday and Saturday is also cruise traffic day. Any chance you can take that 5 whatever AM flight on Monday?
Did you see where you could save $80 by going to RDU and flying through CLT (over the cost of CLT to Palm)? Got to love that, two extrs segments, flying back to where you drove 2.5 hours from, for less money.