You should absolutely hire a criminal defense lawyer. Because even if you think the government has all the evidence they need against you, a competent criminal defense lawyer could challenge that evidence. They could challenge the admissibility of that evidence, they could challenge how that evidence was gathered, and see if it was gathered in accordance with the laws of the Constitution. If we could prove that the evidence was gathered against the laws of the Constitution then we could try to keep that evidence out. Furthermore, everything is a negotiation there is a vast sentencing sheet that will be fought that will be negotiated.