The south was a little slow catching on to
permaculture, but I think it is growing in strides. We are in middle TN, south of Nashville (previously we were in northwest florida). Our place is called Spiral Ridge
Permaculture and we have been teaching courses here for a number of years. We are seeing increasing interest, better attendance of southerners at courses, communities networking and creating guilds, etc. So, it is happening. Usually there are little pockets of folks - which are sometimes hard to find if you are in a real rural area. A friend of ours, Penryn is part of this group
http://www.meetup.com/Louisville-Permaculture-Guild/members/9872718/, if you do end up in KY. The south is ready. The amount of food you can grow here is outrageous, and you are right, land is cheap. Many areas don't have building codes - which is great for us natural builders.
Blessings,
Jennifer