When you only have one lens, you don't improve your set by including redundancies
I'm going to laugh when you end up with a 70-200 II, 85L, and 100L macro... then maybe a 135L 
Damnit. You're no help.
It'll be a 17-40L, 85L, 70-200L, and possibly some other lens I'll think up next. I don't know it changes daily 


This gives you a range of focal lengths in your lens line up.





