if you're going to be in the Devils Elbow area - you're right around the corner from Little River, and the Barkley State Park. I've never fished there in the Fall ... but, in the Spring, that area (State Park) has produced some of my better catches (numbers wise) from Barkley. If the main lake (DE area) is too rough, consider driving around to the State Park and launching there.
The mouth of Little River has all the structure and depth and channel ledges that you could want ... but, if it's too rough there - fish around the rip rap bank next to the large boat slips, at the Marina (if water levels permit). The channel runs in close to that bank, and there's always "shade" provided by the boat slips & trees along that bank. You should have rock rip rap in front of you ... two islands behind you ... the boat dock slips to your right ... the State Park Restaurant building to your left --- then you'll be in the right place !!
I'd ask around at some of the local fishing businesses, to find out what depth the fish are being caught from ... and use that info to establish a game plan, in whatever area you wind up fishing in. ........ luck2ya .....cp