thanks for the responses and advice !, the website is something to try out, and i wasn't sure on how to ''protect'' images, or how image size would affect loading times, but i will take your suggestions into consideration.
The gear I brought was not canon, sorry, I only recently moved to canon...
d800(with grip for increased battery life and fps in dx mode)
Nikon v1 with ft1 adapter ( but i didnt use it to take pictures at all, only video)
70-200 2.8 vrII
200-400 f4 vrII
2x teleconverter ( also hardly used)
I would advise to take two DSLR bodies if possible, the zoom lens was great ,but i sometimes missed reach with 400 on a full frame, and it was too dark at other times for f4.
Also a high fps body next to a 'slower' one , 4-6 fps on the d800 was quite low, and 8-10 fps would have been really desirable for those short lasting 'once in a lifetime' moments..
Advise on a lens is really hard, it depends on where you are going and what type of safari you are going to have.
If you are allowed to do off roading, 400mm on a full frame is often more then enough, otherwise i would go with the longest lens you can carry/rent/buy.
I saw some people with canon, they had a 7d with 100-400 or 300 2.8, others used 1d bodies with 400 f2.8
Some disadvantages of the 200-400 : it is f4 on 200 and 300 mm, which can be quite slow
: the transmission value is around 5 (closer to a f5 then f4 lens)
: the feel of the focus ring was not solid.
: auto focus slightly less fast then primes
I moved to canon and purchased a 500 f4, 300 f4, 1dmkiv and 1.4 converter for now, when i go back i hope to complement it with a 5dIII/successor of the 7d, and a 70-200 2.8 and some short lens.
If budget would have allowed it , it would have been a 1dx 400 f2.8 1dmkiv 600 f4 , 5d3 70-200
Dreaming never hurts