Not a chance.
No matter what form Bee is in he can't evade Amaterasu, if he decides to stay in any form besides Bijuu Form and fight in close combat with Itachi, he'll end up falling for Tsukuyomi (Which can't be broken by a Perfect Jin)
TBB is never happening because if he enters full Bijuu form he gets raped by Amaterasu or sealed by Totsuka no Tsurugi. Either way its GG.
Blitz Itachi? No matter what form B is in he lacks the capability to blitz Itachi. Sharingan let Sasuke evade V1 Cloak Bee and the only reason he got hit later on is because he was turned around and thought he had downed Bee with Genjutsu, if he gets caught in Tsukuyomi its GG, or Itachi can simply evade V1 or V2 B as Sasuke (who is slower and has inferior reflexes) was able to do so.
Amaterasu isn't getting absorbed by Samehada when B is also lit up by it, all over his body. Not to mention he can't even wield that in Full Bijuu form.
Your close combat section made me laugh though, considering Itachi already canonically schooled him in canon.
Naruto saw Itachi coming and jumped to intercept him. Bee was surprised by Itachi's Shunshin.
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Itachi dodged all of Bee's attacks and even landed him in Genjutsu without him even realizing it.
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Imagine if he had used Tsukuyomi instead? Bee would have been done right there.
And he dodged Bee's Seven Sword Dance, the same dance that got Sasuke.
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Itachi clearly defeats and outclasses Bee.