With hunters being the cowboys of the three classes I think it would be dope to put some armor and weapons together to be like a rootin tootin cowboy.
For primary weapons I would go Last Word or First Curse.
I don't know what secondary but I would go with a shotgun.
For heavy it doesn't matter.
For helmet I would go celestial nighthawk.
For chest armor I would go with the dream eater or long tomorrow 9g.
For the cloak it could be the scarf, the cloud walker tribute (with vallsgarde shader) or the dustwalker cloak
For the shader it could be vallsgarde or bloodpact don't really know about gloves and boots, so feel free to leave ideas in the comments.
[spoiler]Yee-Haw[/spoiler]
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Should have a special exotic cloak that looks like a Clint Eastwood style cowboy poncho.