Barcelona to Florence via Southern France etc

[freespiritz]

Planning spring break!! :D

Looks like one or two friends and I will be doing a crazy ten day hopjumpskip along the Mediterranean coast (mostly) from Barcelona back to Florence. Not a lot of time, so advice on where to go would be appreciated for days 2 through 5! Here's a list of places that we might like to go in France, and advice on how to best fill our time in a little intro to France would be lovely...yes I wish I could spend more than a night in, well, Barcelona and everywhere else, but unfortunately that won't be possible. We're pretty sure we want to try and get to the underground temples near Turin and hit up the Cinque Terra in a slightly more leisurely fashion.

Carcassonne, Montpellier, Nimes, Avignon, Arles, Marseille.

Day 1: Morning flight from Florence to Barcelona
Day 2: Barcelona - ?
Day 3: ?
Day 4: ?
Day 5: ?
Day 6: Nice? - Monaco to Turin
Day 7: Turin - underground temples (Valchiusella) - Cinque Terra (Monterosso)
Day 8: Cinque Terra
Day 9: Cinque Terra
Day 10: Cinque Terra (Riomaggiore) to Florence


Also if anyone knows anything about scuba diving at Barcelona or Cinque Terra or anywhere else I might be going to, that would be great.