If you are planning on going from South to North along the Pacific coast, you will be going against a significant headwind. Good luck. Most riders plan to ride from North to South. You might escape much of this by riding inland of the first major ridgeline.
If you are actually planning to bring a gun, consider that carry laws vary among the states, and that the only land route between Alaska and the Lower 48 states goes through Canada and they severely frown on handguns being brought into the country. Don’t spend your vacation in jail.