Where are you going after Yellowstone/Tetons? It seems like the national parks are all 500 miles apart except for the Tetons/Yellowstone... 50 miles. How are you planning on getting from West Yellowstone to Jackson? I hope it is not on 22 over Teton Pass. I think you will find it makes better sense to go to the Tetons on 287 first and then in the south entrance of Yellowstone to West Yellowstone especially coming from Louisiana.