Hi kewlwhip,
The only options I’m aware of in your immediate area that I would consider (subject to making sure that any mattress you are considering meets the quality/value guidelines here) are included in the Jackson, MS list here. (Angeles Furniture and Mattress which carries Pure Latex Bliss and Furniture South which carries Jamison and some Restonic mattresses).
If you are comfortable with a longer drive then some of the options in the Baton Rouge list here may be worthwhile calling and/or visiting since there are several factory direct manufacturers in the area that would be well worth considering.
Phoenix