I suggest getting the 24-70 f/2.8 II it's quite expensive but worth the money over a bunch of primes that you'll have to carry and change out all the time and you're going to get tired of doing so.
In my bag is
Canon 5D Mark III
Canon 70-200 f/4
Canon 70-200 f/2.8 IS II
Canon 24-105 f/4 (terrible lens never buy it unless it's 200$ or less)
Canon 40 f/2.8
Canon 600 EX-RT
Canon BG-E11 (bettery grip)
Also misc batteries and CF cards.