Primes vs zoom
If you have plans to go to FF in the future, it would be convenient to invest on lenses that can be used in both worlds. Using zooms, you can use like the following sequence (it may be quite expensive):
Option 1: 16-35 f2.8L II + 24-70 f2.8L II + 70-200 f2.8L II IS
Option 2: 17-40 f4L + 24-105 f4 L IS + 70-200 f4L IS
Option 1: 14 f2.8L II + 24 f2.8L II + 35 f1.4L + 50 f1.2L +85 f1.2L + 135 f2L + 200 f2.8
I'm not made of money:0)
I could skip the 14mm and the 24 mm and use my kit zoom for the 135 and 200.