Wow katie, I commend you to taking care of yourself and trying to fight your health problems by diet and exercise and trying to go do drugfree route. Sorry about reading about your lupus...I heard that medication can suck (add weight gain) so I don't blame you for not wanting to start that yet, esp. since you are not a severe case.
I guess if you want to add cals but stay low on carbs, you'll need to up the protein and the fats then. Didn't w8 and Dp work on a diet with you? What happened to that?