He didn't aim for Kabuto at all if you look at the scan he put an amaterasu circle around them so Kabuto couldn't get any closer.damn, if that's legit then how the **** can sagemode or rinnegan users dodge such things, regardless if he can sense or not.
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Not really for example BM Naruto blitzed all those Bijuudama's back via shunshin. His regular running speed is no where near that fast.I agree but just to be sure none of Raikages running speed is "regular" in his lightning cloak. To me he's basically always shunshuning because his every movement has bijuu level chakra. I guess what I'm trying to say is if he were to run at full speed he has to shunshin by default because the form allows no less.
For example his fastest punch is literally him dashing at full speed. Its automatically a shunshin.