Guatemala

I'm heading to Guatemala in two weeks and would love to hear anyone's suggestions on where to go. I'll be there for nine days and thus far the itinerary includes Tikal, with a night in Flores, Antigua, Lake Atitlan, and either Chichi or Sololas market. Anyone have any thoughts on cities/towns to be added, length of stay, what should be seen first (I'll be flying into Guatemala City).

Thanks!
Shauna

I'd be interested to hear about your trip if you made it down there. I am planning a trip and would like to do volunteer work, but I want to work in an area that offers good vacation opportunities also. Many Thanks!