I've read the replies to your original question and feel like you've been given great advice from all of the responders. My reply is to your last question regarding the selection of an agent.
I actually work in the Ellijay market and will gladly provide you with a CMA and recommend a listing price for your cabin. I know you're afraid that your home will be compared to the newer cabins, but that's not always the case. Some of the older homes were built on property that just isn't available anymore and it sounds like that is the case with your 5 acres right on the river! I can assure you a lot of weight is given to the older (even smaller) cabins with great locations. Buyers who are looking for a second home/cabin up here, are usually interested in either a mountain view or a river/creek. The river/creek homes are even more appealing to "flatlanders" that don't really like driving up a mountain to their home. I speak for myself, as I came from FL three years ago, and personally prefer the creek front home setting.
I am a member of all three MLS services in this area: CTI, FMLS and GAMLS. This provides maximum exposure for your home in addition to enabling me to put both the NE GA lockbox and the FMLS lockbox on the door. Dave was correct in his "caution" to use someone who will lockbox with both systems. It DOES help when Atlanta agents come up to this area and are able to access the home with their own lockbox key, without having to schedule a specific appointment.
I also think it's important to find and agent who believes in the value of your property (as you do) as opposed to someone who just wants to list it for you. So, from a local agent, who totally understands the joy of living on the water... I offer my services to you if you'd like them. As you can see, I'm a big believer of internet marketing and expose all of my listings to as many venues as possible... like trulia!
Realtor, Metro Brokers GMAC