we vote b. The first trip we took was 10 days and our last trip in feb was 14 days and it was the perfect amount of time(well actually the husband thinks three weeks is better but i think that is pushing it.lol). It also takes us a bit to get into the flow of vacation time and at the one week mark we are finally comfortable and settled and able to make the most of week number two. Either way i dont think that you can go wrong. Good luck with the decision making.