Southern Comfort is 80 proof alcohol. If you are going to extract THC and CBDs in alcohol, (the alcohol works as a solvent) it's recommended that you use at least 100 proof alcohol. Most people use Everclear because it has the highest alcohol content, but it tastes really, really bad. I'd try 100 proof Vodka or 151 rum. You can always add a little sugar and an alcohol based flavoring like vanilla or lemon (whatever) to make it taste a little better.
It's best to avoid 80 proof alcohols because they contain a significant amount of water and that's an invitation for bacteria to set in and spoil the brew. I've made a lot of herbal extractions using 100 proof Vodka and it works fine. Additionally, the finished product tastes about 1000 times better than any tincture I've ever made using Everclear. The Everclear stuff is pretty hard to gag down.