Greetings Chris:
Value, of course, will depend on species, tree quality, and quantity of merchantable wood volume. To this end, I strongly suggest you contact a professional consulting forester in Georgia who can provide you with some logical and reasonable answers to your questions. I suggest this because an on-site assessment of what you described is necessary in order to answer your questions :-)
http://www.gfc.state.ga.us/Resources/Directories/ConsultingForesters.cfm
Best of luck to you!