Atkins is low carb isn't it? If so I wouldn't eat a high carb meal every day if you've been on atkins, I would keep the carbs just as low for phase 1. But hey I'm no expert on this I just registered but I've been eating grain free for several months now and I feel great. Remember the goal isn't just to lose weight or hit a certain weight but to healthy and strong (not bulked up necessarily).
And if you find that you're not dropping any more fat after a couple weeks then try eating 500 or so less calories from fat a day to try to encourage using body fat for energy in the absence of dietary fat. Or include some more physical activities. Or both maybe. Again, I'm no expert.