Well, for one, backcountry riding simply doesn't exist in the southeast. Working with your current budget, I'd probably suggest getting some decent outerwear on sale and buying some boots that fit you. Forget buying a board and bindings for now, just rent. That late in March is gonna be iffy in the southeast. Snowboarding is pretty much a mid-winter sport in the southeast.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz