"should I use the prison address or his common home address?"

Why not ask the inmate?

"Do I uses direct deposit to a bank account and then it can be sent to his federal account via Western Union?"

Why not ask the inmate?

"What are you going to do?"

Well, for all of my inmate clients.............................. on second thought, all of my clients are still walking the street so it isn't going to be an issue for me.