Seriously, if it were me, I'd sell the 70-200mm f/4 IS (I sold mine last June) and use the proceeds + 200 = a new 24-70mm Mark 1 (before they're all gone) - the mark II will drop in price eventually once the early-adopters have been fed!
Now take your remaining cash and get the 70-200mm f/2.8L IS II USM lens, so you have 24-200 @f2.8 covered, then I'd dump your primes and put the proceeds towards a 14mm f/2,8L wide angle prime instead
Later on, you can trade-up to the Mark II standard zoom for a few hundred bucks, but you get to use your current cash on a much better telephoto zoom right now.....
...just what I would do if I it was my 5D3 and cash hoard to be spent on glass