5D III + 70-200 f2.8 IS II with 1.4x TC III @ f4.5
Nice one Dylan777
If you haven't get 1.4X TC III, I would highly recommended. I plan to add another 1.4x TC III just for my 400mm f2.8 IS II. Off topic:
Here are my thoughts shooting with 2 bodies:
1. 24-70 II + 70-200 f2.8 IS II - shorter range indoor/outdoor
2. 70-200 f2.8 IS II + 400mm f2.8 IS II - mid range indoor/outdoor
3. 70-200 f2.8 IS II with 1.4x TC III + 400mm f2.8 IS II with 1.4x TC III - longer range outdoor
600mmish is in the consideration. I'm not good with math, but 600mm with 1.4x TC III would give decent lenght for BIF and surfing photography. The only thing that could hold off 600mmish purchase is "do I have times for BIF and surfing photography?"