There are plenty of places to stay around the lake, it just depends on what part of the lake you plan on fishing. Be prepared for a zoo on the water. As long as another monsoon doesn't come through east TN and make the lake chocolate milk again I plan on going down soon and fishing a full week, Mon-Fri.
The FLW Costa is that weekend too, so that's another 100+ boats and they'll be going out of Dayton, so I'd avoid that ramp....
Mon-Fri only for me and even then it can still be a zoo there.
Good luck