Seriously looking at where you are from I would be going the 70-200. Even though I don't have a 16-35, I have a 17-40, I rarely use it with my 5D2, The 24 end on my 24-70 or 24-105 is wide enough for anything I do with the FF, in fact I mainly use my 35L or 70-200L even for landscapes these days. It is often spoken about, ultra wide angle lenses getting too much in a picture that shows very little detail because everything is so small, which is why I never use the 17-40 in the scrub. I mainly use it in close quarters like cityscape situations, which is something you don't have a lot of! The 70-200 could be used very effectively to pick out points of interest when you are out and about. I even use it inside sometimes at family gatherings, you just have to have enough room between you and the subject.