Did you bed in the parking brake shoes on the new rotors? If not, that is why the parking brake isn't working. You do this at low speeds in a safe area, parking lot. Drive along, press in the release button on the parking brake lever, and engage the brake. You'll do this several times until it starts to grab well. What you're doing is depositing some pad on the inside of the rotor hat.
I wouldn't freak out on the noise just yet. Go thru the procedure a few times and see if it goes away. If not, lift the corner of the car and spin the wheel manually to see if you can pinpoint it better.