Ummm... Hashirama is not at full power, they are just stronger than they were before when brought back with edo tensie, another thing is that Orochimaru would not be so stupid to attempt anything wrong until he has him in check, but overall it was a pretty decent chapter!
I like the story until Hashirama stabs Orochimaru with some weird Kunai and makes him lose control over the Edo tensie only part I didnt like, other than that I like it