For 20lb braid or less you can get away with a 2000 or 2500 reel. That will only use 8lb test mono or flouro though. Which for finesse might be enough, depending on where you live, down South, that isn't enough.
If you are planning on spooling mono or flouro, you should probably look into a 3000 or 4000 size reel. That will get you into 12 to 17lb mono or flouro, although I have put 20lb mono on some 4000 size reels, but they are kind of short on line sometimes. These also become kind of heavy and unruly when trying to cast all day.