Least violent is bribing him, as I've mentioned. He'd probably want to talk to be in person, would probably attack me if he got bored or decided not to agree, and at the stage I'm at might be successful in killing or capturing me if I was alone. A set up backup circles is reasonable, though I'll be trying to minimize risk to myself.
My plan is to complete the resurrection technique first, though, and see about breaking the Death God's seal to get at least my prior incarnation to help, if not also the other ones sealed there. Even Orochimaru would balk at that kind of opposition.
I'm hoping to approach Orochimaru with the bribe initially. If we can resolve this without violence, I'm fine. If he refuses, I plan to take whichever resurrected I've recruited, kill him, destroy his back-up bodies, destroy his other known methods for self-resurrection, and then possibly arrange for Sound to be taken over by someone with functioning morals. Possibly me, possibly a resurrected, possibly someone local. I'd rather not me, since I hate politics, but if I kill Orochimaru his followers will respect me enough that I can lead.
My current minimizing-risk plan involves sending in a shadow clone with a resurrected as a guard. Shadow clones are chakra constructs; they have their creator's memory and personality, and their memories return to the creator on their destruction. Orochimaru might still try to hunt me down, though.