You've got a great plan Rachel. Plenty to do in San Ignacio and it will certainly be cheaper from there. Cave tubing, zip lining, Lamanai and Xunantunich are all great.

A trip to Caye Caulker from San Pedro is inexpensive and very very fun. The ferry leaves from downtown and the scheudle and prices are here in this site.

Hol Chan and Shark Ray are great trips as are the jetski tours of the island if you like that.

Have fun!

I will have a Belikin -- put it on klcman's tab.