Your calories range gives you some flexibility. Passing on the gravy is a great idea and selecting half a baked potato in favor of the entire option is another great option. Select a 3 oz potion of white meat turkey (lower fat than dark meat) and then fill the rest of your plate with vegetables and you should be right in line. Eating below your recommended calorie level can be a problem so enjoying an evening with family and a daily intake of 1400 calories shouldn't through off your weekly goals. Here are some resources that might also help.
Ask the Expert Question: If I consume fewer calories than my plan recommends, will I lose weight faster?
Smart Portion Control Tips www.sparkpeople.com/resource/nutrition_art