That's the best option. Easy to accomplish for most it is just to walk into a notary service after you made an appointment and get it done. He need to see you in order to notarize your docs.Go in to a notary service that's the cheapest and ask them to certify your passport while you are there they can see it is you and the passport is real and it is yours.
With the utility bill you will need something additional with you that can prove you live at this address, typically a Social Security certificate or something they know is not faked.