Hello Kip and welcome
I'm no expert on wood stoves, but I know everyone is going to want more details about your building.
#1, How good is the insulation?
#2, Is 30x30x 18' high ceilings?
#3, How many sq ft of windows?
#4, What type of windows?
#5, Are the doors insulated? (Any garage doors?)
#6, Will the area require heat every day? (for how many hours?).
#7, Do you have a good source of wood (or other solid fuel)?
#8, Is the roof suitable for solar collectors? (Sun exposure good?)
That's all I can think of right now..
IIRC, a typical generic 30x30 living space would need approximately 18,000 BTUh for cooling or heating..
Depending on external factors.. Like 1 to 5 above..
The Average climate in Jackson, Louisiana (in pics)
seems like a nice place to live.. If you don't mind the dampness..