When's the earliest you can get the Legend of the West outfit?

[1337Walrus]

Forgot if you need access to West Elizabeth for it or if you can get it more or less right away.

[Kippers]

I think you need to unlock West Elizabeth because of the animals there, not sure as its been years since I've played.

[Fishy]

You can get to Mexico and West Elizabeth early through campfire related tricks/glitches in which you can complete all 4 challenges