If your heart is set on a chessie, then that is what you should get. However, if you are truly open to suggestions, then I have two for you.
The first, look no further than your own backyard, The Boykin Spaniel. The official state dog of SC. They are powerful little pocket rockets that can definately deal with the summer heat of SC due to their body size vs that of a lab, golden, or chessie. www.boykinspaniel.org
for more information.
The second is a particular lab breeder. www.uklabs.com
Mike Stewart at Wildrose kennels has a fine line of British labs. Wildrose is the oldest and largest breeder of British labs in the US. Check them out, they will not dissapoint. One other note, Wildrose is the home of Drake, the official lab of Ducks Unlimited.