That's cool. I don't know much about videography. Good choices on the lenses. Sometimes I see good deals on used cine lenses pop up for cannon. My main gear was cannon so I can say you will probably be pretty happy with your choice.

I sold all my Cannon/Olympus gear/telephoto lenses and bought a Sony A7s ii. Just going to have 18, 55, and 75mm primes only. Might get a macro for frogs but i'm trying to keep it simple.