It seems like to me that you have everything planned, which it's good that you are planning ahead and finding ways around the whole social eating situation, it can be tricky I know to stay social and diet but with you making/taking your own food you'll be just fine. I don't think you'll miscalculate, I think that's just your mind playing tricks with you. I admire your focus. Keep that up and you'll be at goal soon enough. When is the first official weigh in again?