Paddle Georgia did Dawsonville to Rome a few years ago. Check out their maps and detailed guides. They spread the trip over 7 days because the group is so large so you could definitely do it in a shorter period depending on how hard you want to paddle. https://garivers.org/paddle-georgia/maps/
Also, Joe Cook of Paddle Georgia writes great river guides and has one for the Etowah. You can buy it on the Paddle Georgia website or Amazon. https://smile.amazon.com/dp/082034463X/ref=cm_sw_r_sm_apa_fabc_36BbGbPN2NF2W