Analyze how you feel. Do you have enough energy to complete the exercises. Do you have energy at other times of the day, or are you completely wasted after a workout? Do you ever get symptoms of low blood sugar or hunger such as dizzyness or shakes?

The 250g of protien seems a little high to me. Even the most liberal protien suggestions say about 1g per pound of lean weight (some say total weight). even at that liberal of a count, you should only be getting aorund 125 or so. You might check out protien power. It is higher protien, lower fat, and you may find it fits your needs more. Atkins is a high fat diet and the magority of your calories should be coming from fat.

If you start to feel poorly or hit a weight loss stall you might want to cut back on the protien slightly. Remember though with that much exercise you may not lose weight at all as muscle is building. Use a tape measure to monitor fat loss, that is much more important then the scale. www.mybodycomp.com can really help with that.

Also is that 15g of carbs net, or total? If it's total then start getting more veggies in. Maybe even start adding fruit and other low GI carbs. Some find that before weight training having carbs such as steel cut oats can help the workout.