Hi Patbuck! For 180lbs you are not eating enough. At the very possible lowest you should be eating 1900 cals. You will lose LBM on this diet. I would start by increasing your carbs and fat. If you want to lose fat, stick with slow burning carbs for optimum results.
Don't worry about refeeds or carb-ups until your diet is in order. And I would start by increasing your calories.