Hi I am taking my frist trip to Ireland. I will be traveling with the family and we will have a car. I am taking a 5d with 24-105 and 16-35, as well as a flash and a lightweight tripod. We will be doing the usual touristy drives and looking at the countryside and castles. Although I tend to be a zoom in shooter, I think Ireland will allow me to really enjoy going wide. In your opinion(s) is it worth it to lug around the 70-200/4 (non-IS) in addition? It fits in my backpack, so I could take it, but it is a rather heavy total combination of gear. thanks for your help.