They are great for chooks, not that great for snakes.
Think about building a base for it so that the wire isn't at ground level.
Like a box of plywood 600mm high to sit the base of the avairy on. Wire isn't very snake friendly, especially at ground level.
Snake avairies are, ideally, built in a way that the snake can't rub against the wire, which means the bottom half solid wall, and big enough for branches or trees that they can climb without being able to reach out and rub their faces on the wire.