You start the battle with float. I gave hermes sandals to everyone.
Each of the summoner's turns, I used Golem. I had my Faris as a freelacer, with the Rainbow Dress (I didn't give her the red shoes, cause I wanted haste). It inspires swords dance. With dual wield, I did 8x the damage. To heal, I used White Wind. In fact, I video taped it. This is a REALLY easy strategy, specially if you've mastered Dancer.
It's good, I'm surprised too.

http://www.youtube.com/watch?v=aqxu9LEeQ0o