Cybersis, have you read the SBD book? It is really helpful; IMHO it's essential to doing well on SBD.
In the book Dr. A says that caffeine can stall your weight loss due to its effect on insulin. He says you can safely have up to 2 servings of a caffeinated beverage every day without seeing much effect, though. Keep in mind that this is 16 oz of liquid (that's 2 servings) a day...so no HUGE mugs of coffee like my husband uses (his holds 3.5 cups!!!
You can use skim, 1%, or even 2% milk as creamer, but avoid the non-dairy kind...they have sugar and awful trans fats.
You can add SF flavored syrups to add sweetness and flavor, and/or splenda or another sugar substitute.