Consuming 2000 extra kcal near a weigh measure, of course that will skew the results. It takes some time to remove that excess. Also, I want to get a clean measure, as good result as possible
It all depends on your routine and your personality. In the gym there's a lot of machines, and trainers that can draw you an exercise plan and help you. I find it easier to exercise in the gym than at home, because at home I'm just delaying.