Technically, you’ll be able to see totality from anywhere in the path.
The closer you are to the center of the path, the longer totality will be for you. If this is your first eclipse, it would be a good plan to try and get as close to that centerline as possible. However, you should also be respectful of where you choose to set up.The side of the road is not good from a safety standpoint, and people’s yards and parking lots belong to them! Rest areas may be very crowded, but parks and other open public areas are wonderful. Eclipse2017.org will keep a listing of all known official viewing areas, so visit early and visit often to keep up to date with the best location for you!