If you were dropping $5k...

Hey! Stumbled into the above majestic bird shots. These deserve to be in the "show your bird" post, image properties on so we get some insight.

For such diverse demanding needs from UWA to Super-tele there's no definitive kit unless you want to own the entire EF line plus some 3rd party stuff. I'd say best approach is have a core of 4-5 lenses and buy, sell or rent lenses around them at will. This year you have that kit, next the other. And everything depends on (frequency of) assignment.
 
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a 300 2.8 is a wonderful lens, but 200 2.8 is not so far away, and maybe 200+1.4 4.0 is not so far away either.

i guess, you will never carry the 70-200 2.8 and a 300 2.8 at the same time (and some other lenses)

I switched a 70-200 4.0 IS for the new 100-400 which has fantastic IS. If you would like to go big/long, maybe stretch for a 500 4.0, which can give 1000mmm with AF. As it seems, you do not need it urgently, so maybe you can save money for some month longer
 
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